9 Oct 2026 · TrustList Editorial
How to tell if the software you host yourself is still patched
A method for checking vendor lifecycle pages, advisory feeds and the CISA exploited-vulnerabilities catalog against the versions you run,…
8 call center companies ranked by rating, review volume and listing quality.
Between them, the 8 call center companies on this page cover business services (7), retail (5), telecommunications (5) and information technology (4). They also list work in Nottingham. 8 of them have written a profile you can read before you get in touch.

Consumer Products & Services · Business Services · Retail · Also in United Kingdom
dunnhumby is a customer data science company. It combines shopper data, AI and retail experience to help retailers and consumer brands understand how people buy.

Business Services · Information Technology · Telecommunications
3S is a telecommunications and IT company in Poland. Its TeleCloud platform brings together IP telephony, unified communications and call centre tools.

Consumer Products & Services · Hospitality & Leisure · Information Technology · Also in Philippines
Philippines outsourcing provider supplying call centre agents, back office staff and technical support to overseas companies

Energy & Natural Resources · Business Services · Financial Services
Global customer experience outsourcing for enterprise brands, covering omnichannel support, multilingual service and speech analytics

Energy & Natural Resources · Business Services · Financial Services
Direct TPV provides third party verification using automated or live agent services.

Business Services · Financial Services · Information Technology · Also in Nottingham
Global Enterprise Networks is a UK-based partnership that operates as an internet service provider and IT outsourcing firm.

Supply Chain, Logistics, and Transport · Business Services · Financial Services
Infosys BPM Limited provides business process services, including business process as a service (BPaaS), for retail, CPG and logistics companies.

Supply Chain, Logistics, and Transport · Hospitality & Leisure · Business Services · Also in London and Dublin
Welcome to Voltron Operations Call Centre , where exceptional customer service meets cutting-edge technology.
For vendors
The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.
Not on TrustList yet? Add your company or claim its listing, free.
Free
Paid · always labelled
Every other way we rank call center companies, by what they do and where they are.
The newest guides and analysis from TrustList Insights.
9 Oct 2026 · TrustList Editorial
A method for checking vendor lifecycle pages, advisory feeds and the CISA exploited-vulnerabilities catalog against the versions you run,…
9 Oct 2026 · TrustList Editorial
Our launch board also shows that 29 of 37 products calling themselves open source name no licence, and 30 of 36 products found through…
9 Oct 2026 · TrustList Editorial
Later OPT recommendations, including STEM extensions, would cost schools $30,000 each. DHS says schools may pass the cost to students or…
Jump to another ranked category.
Everything here links back to the same verified catalogue. Pick your next stop.