Gamma Communications vs 8x8
Gamma Communications edges out 8x8 on breadth, network ownership and UK grounding
Independently scored · last reviewed June 2026
Gamma Communications and 8x8 both do cloud telephony for UK businesses, but they're built around quite different assumptions. Gamma is a FTSE 250, UK-based provider with its own network infrastructure, selling hosted telephony, connectivity and managed cyber-security, largely through a sizeable channel partner network. 8x8 is a US-headquartered, Nasdaq-listed platform business whose XCaaS architecture folds UCaaS, CCaaS and CPaaS into a single system, backed by a financially-guaranteed 99.999% uptime SLA. If you need broadband, leased lines or managed security from the same supplier as your phone system, Gamma is the only realistic option of the two. If you run a contact-centre-heavy or multi-country operation and already have connectivity sorted, 8x8's integrated platform deserves serious consideration. Compare Business Costs scores Gamma at 76 and 8x8 at 56, driven mainly by the breadth gap and Gamma's stronger financial position and UK network ownership.
Side by side
| Metric | Gamma Communications | 8x8 |
|---|---|---|
| Overall score | 76 ✓ | 56 |
| Categories covered | 3
| 1
|
| Trustpilot | 2.6 | 3.2 ✓ |
| Breadth of service | 72 ✓ | 30 |
| Value for money | 65 ✓ | 62 |
| Support & service | 68 ✓ | 62 |
| Reliability | 88 ✓ | 85 |
| Reputation | 74 ✓ | 64 |
| Founded | 2001 (founded by Phil Corbishley and Paul Banner) | 1987 (as Integrated Information Technology; renamed 8x8 in 1996) |
| Head office | Newbury, Berkshire, England | Campbell, California, USA (with UK operations) |
Category by category
Gamma Communications is the only provider of the two with connectivity products, FTTP, leased lines, SD-WAN and broadband. That makes it the winner by default, and a genuine option for businesses that want a single supplier for lines and calls.
Both providers offer capable cloud telephony. Gamma's portfolio is broader, covering Horizon, SIP trunking, Microsoft Teams Phone and Cisco Webex, and Frost and Sullivan recognise it as a market leader. 8x8 is competitive and its integrated CCaaS makes it stronger for contact-centre work, but on depth and flexibility Gamma has the edge.
Gamma Communications is the only provider here with a managed cyber-security stack, including SOC and MDR services. 8x8 offers no managed IT or cyber-security at all, so Gamma wins this category outright.
Which should you choose?
Gamma Communications is the right call for SMEs, mid-market and public sector organisations that want a financially stable, UK-network-owning supplier for telephony and connectivity, or that need a single partner to cover calls, broadband, leased lines and managed cyber-security. It's particularly well suited to businesses buying through a reseller or standardising on Microsoft Teams Phone.
Full Gamma Communications review →8x8 suits mid-market or enterprise businesses, particularly multi-site, multi-country or contact-centre-heavy operations, that already have connectivity in place and want one tightly integrated cloud platform covering UCaaS, CCaaS and CPaaS. The financially-backed 99.999% uptime SLA and broad compliance accreditations will matter to that kind of buyer.
Full 8x8 review →Gamma Communications is the overall pick, scoring 76 against 8x8's 56. The gap comes down mainly to Gamma's genuine multi-category breadth: it can supply connectivity and managed cyber-security alongside telephony, and its FTSE 250 scale and UK network ownership underpin a reliability score of 88. 8x8 is not a weak option. Its integrated CCaaS platform and compliance accreditation set are genuinely competitive, and contact-centre-focused buyers should look closely at it before defaulting to Gamma.
FAQs
Can I switch from 8x8 to Gamma Communications without a long gap in service?
Number porting between providers is well-established in the UK and both suppliers support it, but the timeline depends on your current contract end date with 8x8 and the complexity of your number ranges. 8x8 has received recurring complaints about early-termination charges, so check your contract carefully before you start a switch. Gamma is predominantly sold through resellers, so your migration experience will partly depend on which partner you use.
Which provider is better suited to a smaller business with fewer than 20 staff?
Gamma, via its Horizon hosted phone system or a Teams Phone setup through one of its 1,500-plus channel partners, is a common choice for small and micro businesses in the UK. 8x8's pricing and contract model are more squarely aimed at mid-market and above, so smaller businesses may find Gamma a more practical and cost-appropriate fit.
Does either provider offer a single contract covering phones, broadband and cyber-security?
Gamma Communications does. It can supply hosted telephony, business broadband or leased lines, and managed cyber-security (including SOC and MDR) under one supplier relationship, typically through a channel partner. 8x8 offers no connectivity or managed IT services, so businesses wanting that kind of consolidation would need to source those separately if they go with 8x8.