UK guide
The cheapest business phone systems in the UK (November 2026)
Every UK phone system we list that publishes a price in pounds, from the lowest entry price up. CircleLoop has the lowest entry price, £5 per user a month. The lowest entry price isn't the lowest estimate: once you need enough UK minutes for a team, bOnline comes out lowest at £69.75 a month for 5 users.
Prices as publishedGBP · VAT as stated
These are published prices only. We compare what providers charge, not call quality, and a low price here isn't a recommendation.
| # | Provider and entry plan | Entry price | Est. monthly cost, 5 users | Source |
|---|---|---|---|---|
| 1 | CircleLoop Pay As You Go | £5/user/month VAT: Plus VAT | £75 on Unlimited | Pricing page Checked 2 November 2026 |
| 2 | bOnline Starter | From £7/user/month plus VAT VAT: Plus VAT | £69.75 on Unlimited Calling | Pricing page Checked 2 November 2026 |
| 3 | RingCentral RingEX Essentials (2 to 19 users) | £7.99/user/month, paid annually VAT: Not stated | £74.95 on Standard | Pricing page Checked 2 November 2026 |
| 4 | Vonage Business Communications Express | £10/user/month VAT: Ex VAT (page says all prices exclude VAT unless stated) | £75 on Core | Pricing page Checked 2 November 2026 |
| 5 | BT Cloud Voice Basic | £10.52/licence/month VAT: Ex VAT | Unknown | Pricing page Checked 2 November 2026 |
| 6 | Ringover Smart | £22/user/month, 12 month commitment VAT: Excl. taxes | £110 on Smart | Pricing page Checked 2 November 2026 |
| 7 | Aircall Essentials | £25/licence/month, billed annually VAT: Not stated | £125 on Essentials | Pricing page Checked 2 November 2026 |
Numbered by entry price as published; ties keep alphabetical order. The estimate uses the plan named under it, times 5 users or the provider's minimum. No GBP price is published by 8x8, Dialpad Connect, Gamma Horizon, GoTo Connect and Zoom Phone, so they aren't in the list. Add-ons that need another subscription aren't ranked: Microsoft Teams Phone. Featured listings, when any are sold, sit at the top without a number. For your own team size and minutes, use the cost calculator.