Top 100 Call Center Services in London

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Top 100 Call Center Services in London

August 2022

Looking for a top voice service and call center company in London?

Voice services companies provide value to your company: automating your client communication allows your company the flexibility to devote resources to core firm-building activities.

To assist you in your search for a partner, we’ve compiled this list of the top voice and call center services in London. 

List of the Best London Voice Services Providers

  • 1
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    SalesAR is a B2B lead generation company from Kyiv, Ukraine. Since 2019, their team of 25 employees provides email marketing and content marketing mostly to small businesses in the advertising, IT, and business services industries.

    Clients

    • Vedamo
    • SoftServe Business Systems
    • Pharmax
    • Tricent

    Industries

    Notable Project

    An IT consulting services company hired SalesAR  for digital marketing services. They are tasked with establishing a stronger connection and increasing lead generation through email and LinkedIn outreach.

    "We can rely on what the team is doing and do our job without wasting time."

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  • 2
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    AMD is a business consulting company. The small London, United Kingdom-based agency was established in 2019. Their services include business consulting, email marketing, advertising, voice services, and more.

    Clients

    • Mind Future Gaming
    • Fluuid
    • The PR Genius
    • Vendekin

    Industries

    Notable Project

    AMD Digital was hired by a cybersecurity company to handle their lead generation efforts. They were tasked with defining and recreating the client's outbound strategy and sales approach.

    "We were impressed with their marketing expertise and genuine interest in our success."

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  • 3
    • Undisclosed
    • 50 - 249 employees
    • London, United Kingdom

    Abacus Cambridge Partners is a tech consultancy and BPO company that was founded in 2017. The core London-based team of about 50 coordinates voice, ERP consulting and system integration, IT strategy consulting services for midmarket and enterprise-sized clients in the e-commerce space.

    Clients

    • Hafilat Industry LLC
    • Safaricom
    • Telenor

    Industries

    Notable Project

    Abacus Cambridge Partners performs API customization and integration for a telecommunications provider. The team uses Apigee as the main API gateway and product. 

    "They’re one of the best vendors I’ve ever worked with."

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  • 4
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Aidey is a business process outsourcing company based in Tel Aviv, Israel and founded in 2017. Managed by more than 10 people, they offer IT managed services, IT consulting and SI, and voice services for small and medium-sized businesses alike.

    Clients

    • MyCheck
    • Loginn
    • Cyber-Duck

    Industries

    Notable Project

    Aidey is handling a data engineering firm’s customer support. They’re managing inquiries through email, tickets, live chats, and calls. They’ve also improved relevant processes and knowledge base. 

    "Their agility and adaptability make them stand out from the crowd."

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  • 5
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 2 - 9 employees
    • London, United Kingdom

    Gravitas.io is a digital agency based in London that specialises in helping B2B companies generate leads.  Founded in 2019, Gravitas.io has a specialised team of 12 helping their clients start conversations with target accounts by managing email and LinkedIn campaigns. Gravitas.io guarantees their results and takes care of all the top of funnel activities leading to a prospect requesting a call at which point the lead is passed across to their clients.

    Clients

    • WhosOn
    • ThinkAutomation
    • ArtuData
    • Grey Monarch

    Industries

    Notable Project

    Gravitas.io manages a transportation firm’s LinkedIn marketing campaign. They’ve conducted extensive research and created a database before sending primary and follow-up emails to potential clients.

    "Gravitas has delivered everything as scheduled, and there hasn’t been any need for me to chase them."

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  • 6
    • $10,000+
    • 2 - 9 employees
    • Watford, United Kingdom

    Juice Tactics specializes supports HubSpot users and agencies with a range of productized services.  Headquartered in Watford, United Kingdom, and established in 2014, they have 17 specialists worldwide. Their services include voice services, SEO, and social media marketing.

    Clients

    • BBJ Group
    • Turtons
    • The Retail Doctor
    • Kore Software

    Notable Project

    Juice Tactics managed HubSpot tasks for a health education company. They consulted on how to utilize HubSpot to manage internal tasks and developed a custom website. In the end, their unique templates and code helped monetize the platform. Juice Tactics was well-organized and managed many tasks. They helped prioritize tasks and ensured that everything was delivered on time.

    “ [T]hey certainly take many tasks off-hand, allowing you more time for what needs focus.” – CFO Health Education Company

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  • 7
    • Scheduling

      4.7
    • Quality

      4.6
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • London, United Kingdom

    Growthonics is a marketing firm founded in London in 2014. With over 1,000 members, they offer email marketing and business consulting solutions to small and mid-market agencies in the field of business services.

    Clients

    • Panasonic, TimeOut, Twitter, TimeInc, Spotify, American Express, TM Lewin, Creditsafe, JustEat, City Panty, Wonderful, Startupbootcamp, Quantcast, Big Ideas Machine, Ascent, Hussle, Doordash, Dale Carnegie, TOG, JustPark, Fonteva

    Industries

    Notable Project

    A payment platform needed to source data and prospects. Growthonics provided lead generation services; they adjusted the criteria to populate lists regarding prospects that would meet those requirements.

    “Their customer service was outstanding.”

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  • 8
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Established in 2021, Growth Hub is an other marketing company. The agency offers other marketing and business consulting and has a small team.

    Industries

    Notable Project

    Growth Hub runs a credit provider’s lead generation efforts. The client provides market and technical data for outreach script development. The Growth Hub team uses those materials to contact potential leads. 

    “Growth Hub is quickly becoming a trusted advisor and there’s a lot we will work together on in the future.

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  • 9
    • Scheduling

      4.8
    • Quality

      4.6
    • Cost

      5.0
    • NPS

      4.6
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Quantanite is a professional services company based in London and has offices in Johannesburg and Dhaka, Bangladesh. The company, founded in 2014, has more than 1,000 employees and provides non-voice BPO/back office services, voice services, transcription, AI, and email marketing services. Quantanite serves small and larger-sized companies in various industries that include automotive, business services, and consumer products & services.

    Clients

    • Just Park
    • American Express
    • Time Inc.
    • Quantcast

    Industries

    Notable Project

    A food delivery company hired Quantanite to work with the menu content team to help us achieve our service levels around programing the menu content. Quantanite programs new menus to include specials that partners would like to see, seasonal changes, and changes caused by the COVID-19 pandemic. They also provide support in the uploading of images and account creation, as well as specific marketing and promotion activities. The Quantanite team has been exceeding expectations with their work in this ongoing engagement.

    "Consistently, they've been over 100%, and they’re completing their work faster than I expect them to." - Director of Restaurant Success, Food Delivery Company

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  • 10
    • Scheduling

      0.5
    • Quality

      1.0
    • Cost

      3.0
    • NPS

      0.5
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • London, United Kingdom

    CALLCARE is a midsize call center service launched in 1998. Their services include voice services and non-voice bpo/back office services. The company is based in London, United Kingdom.

    Industries

    Notable Project

    CALLCARE provided call answering services for a software company. They were hired to take out-of-hours calls from clients and either route the query to the client's engineers or email it for triage.

    "Most emails were ignored."

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  • 11
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Founded in 2009, Carden IT Services in a London based IT company with offices in Brighton, Essex and New York City. They have a team of 13 who provide IT managed services, IT consulting, IT strategies, and voice services to small and mid market businesses. 

    Clients

    • Levicks Accountants
    • WMC Legal

    Notable Project

    Carden IT Services provided IT support for an educational experience platform. Their team provides remote support over the phone and email.

    "The consistent calm and supportive manner of the team and their tenacity in resolving my issues."

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  • 12
    • $1,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    8x8 is a telephone answering service. Headquartered in San Jose, California; San Jose, California; New York, New York and Buckinghamshire, United Kingdom, their large team offers voice services. The agency was founded in 1987.

    Industries

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  • 13
    • $100,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Firstsource Solutions is a large call center company headquartered in London , United Kingdom; Louisville, Kentucky; Mumbai, India and Muntinlupa City, Philippines. The team offers voice services, non-voice bpo/back office services, finance & accounting outsourcing (FAO), and business consulting.

    Industries

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  • 14
    • Undisclosed
    • 250 - 999 employees
    • London, United Kingdom

    Phone answering service Sabio was launched in 1998. Their midsize team is in London, United Kingdom. Their services include voice services.

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  • 15
    • Undisclosed
    • 50 - 249 employees
    • London, United Kingdom

    Intradiem is a telephone answering service established in 1995. Headquartered in Alpharetta, Georgia and London, United Kingdom, their midsize team focuses on voice services, Artificial Intelligence, and business consulting.

    Industries

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  • 16
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom
    W&T Solutions is a web development company established in 2021. Their small team is in London, United Kingdom and focuses on web development, mobile app development, social media marketing, e-commerce development, and more.

    Industries

    Notable Project

    A truck dispatch services company tapped Web & Tech Solutions to design their logo. The team then developed a WordPress website for the client and optimized the site's content. 

    "I was really impressed with their eagerness to help. They did not make any false promises."

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  • 17
    • Undisclosed
    • 1,000 - 9,999 employees
    • London, United Kingdom

    MeritGroup, an answering service company, is headquartered in London, United Kingdom. The company provides voice services, non-voice bpo/back office services, and BI & big data consulting & SI and has a large team.The company was founded in 2003.

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  • 18
    • $1,000+
    • 50 - 249 employees
    • Borehamwood, United Kingdom

    JAM is a call center service. Their midsize team is located in Borehamwood , United Kingdom. The firm focuses on voice services. The firm was launched in 1977.

    Industries

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  • 19

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    Visit Site
    • Undisclosed
    • 50 - 249 employees
    • London, United Kingdom
    Online Fulfillment Sverige AB is an answering service company. Their midsize team is located in Lund, Sweden; Umea, Sweden and London, United Kingdom. The company specializes in call center services, customer service outsourcing, and sales outsourcing.
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  • 20
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    The Lead Generation Company is a small non-voice bpo/back office services and phone answering service. The Glasgow, United Kingdom-based agency was established in 2012. Their services include non-voice bpo/back office services and voice services.

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  • 21
    • Undisclosed
    • 250 - 999 employees
    • London, United Kingdom

    VeriCall Ltd is an answering service and back office outsourcing company. Launched in 2017, the firm is in London, United Kingdom. The midsize team provides call center services and back office outsourcing.

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  • 22
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    BPO Recruit is a call center. The small London , United Kingdom-based agency was founded in 2009. Their services include voice services.

    Industries

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  • 23
    • $1,000+
    • 50 - 249 employees
    • London, United Kingdom

    TelemarketingPower.com is a call center company founded in 2001. The midsize Surry Hills, Australia-based team focuses on voice services.

    Industries

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  • 24
    • $10,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Dunnhumby is a large branding agency. Established in 1989, the company is headquartered in London, United Kingdom; Edinburgh, Scotland, United Kingdom; Gurgaon, India and , . Their services include branding, voice services, digital strategy, search engine optimization, and more.

    Industries

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  • 25
    • $1,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Integreon is a legal services company founded in 1998. Their headquarters is in New York, with multiple offices worldwide in Mumbai, India, Beijing, China, Johannesburg, South Africa, Makati, Philippines and London. Their team of over 1,000 employees offers non-voice BPO/back office services, voice services, and transcription. They primarily work with clients in the financial, business, and legal industries.

    Clients

    • Microsoft
    • Cognizant Technology Solutions

    Industries

    Notable Project

    Integreon helped a global financial services firm to comply with new regulatory requirements. They led the adoption and implementation of new data visualization tools. This reduced the time and resources spent on the client.

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  • 26
    • Undisclosed
    • 50 - 249 employees
    • London, United Kingdom

    Creative Translation is a midsize translation company. The London, United Kingdom-based firm was established in 1995. Their services include translation and voice services.

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  • 27
    • $10,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    TRUE is a large London , United Kingdom-based branding company. The team provides branding, voice services, content marketing, search engine optimization, and more.

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  • 28
    • $1,000+
    • 250 - 999 employees
    • London, United Kingdom

    Located in London, United Kingdom, Online Giants is a midsize call center. They focus on voice services and were established in 2013.

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  • 29
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    FX Digital is a call center service located in London, United Kingdom. Founded in 2011, the small team offers voice services, web design, web development, custom software development, and more.

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  • 30
    • $1,000+
    • 50 - 249 employees
    • Covent Garden, United Kingdom

    Call center NextCall is located in Covent Garden, United Kingdom. The midsize team focuses on voice services. The agency was launched in 2015.

    Industries

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