Vonage Business Communications
Cheapest published UK entry price and a unique eSIM business-mobile bundle, under an Ericsson owner still working out what to do with it.
Vonage's UK UCaaS is priced simply: Express £10, Core £15 (unlimited UK landline/mobile calling, CRM and Teams integration) and Max £25 (adds a VBC eSIM mobile number, unlimited SMS and WhatsApp) per user per month ex-VAT. It carries a 4.6/5 Trustpilot from 3,238 reviews (the best score of the majors), though some reviewers question that.
Against it: annual terms are the norm for those prices and early termination means paying out the contract; standard support is 8am–8pm weekdays; Ofcom fined Vonage £700k in September 2025 over a 2023 outage that blocked 999 calls; and parent Ericsson has written down over $4bn on the business, installed a new CEO in August 2026 and is openly in turnaround mode, which clouds the UCaaS roadmap. The VBC API exists but requires an approved developer account; no MCP.
Pros
- +Lowest transparent UK entry price
- +eSIM / business-mobile bundle nobody else offers
- +4.6/5 Trustpilot from 3,238 reviews
Cons
- −Ericsson turnaround uncertainty clouds the roadmap
- −Ofcom £700k fine (2025) for a 999-access outage
- −Weekday-only standard support; annual terms typical
Pricing
Minimum commitment: £120 (£10/mo × 1 seat × 12 months). The least you can spend before walking away; excludes numbers, minutes and add-ons.
Express
£10/mo · annual commitment
Month-to-month: not published
- ✓Per user: unlimited inbound, metered outbound
Core
£15/mo · annual commitment
Month-to-month: not published
- ✓Unlimited UK landline/mobile, CRM + Teams integration
Max
£25/mo · annual commitment
Month-to-month: not published
- ✓eSIM mobile number, unlimited SMS, WhatsApp
Specifications
| Rating | 3.7 |
| Pricing and plans | |
|---|---|
| Month-to-month (entry plan) | Not published |
| Annual commit, per month | £10/mo |
| Minimum commitment* | £120 |
| Min seats | 1 |
| Commitment for annual rate (months) | 12 |
| Features | |
| Deployment | Cloud PBX |
| Sales model | Direct |
| Integrations and developers | |
| Public API | No |
| MCP server | No |
| Integrations | Salesforce, HubSpot, Dynamics +4 |
| Ownership and trust | |
| Trustpilot (reviews) | 4.6 (3,238) |
| Support | |
| Emergency 911/999/112 | ✓ |
*How we calculate minimum commitment. Headline per-user prices hide the real cost of trying a platform. Total cost of ownership is licence × seats × term, plus usage, add-ons, setup fees and any early-exit charges. Our "minimum commitment" figure is the floor of that: the entry plan's committed rate × the minimum seats the vendor will sell × the months you must commit to (one month at the month-to-month rate where there is no commitment; the licence price where it is sold per year). It deliberately excludes usage, add-ons and prerequisite licences, so your real first bill will be higher, but never lower than this. For Teams Phone the excluded prerequisites are the Microsoft 365 and Teams licences.
Researched and drafted with AI assistance; reviewed and approved by Dariia Panchenko. How we use AI
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