This page is a list of SIP trunk providers in the UK (United Kingdom) including England and Scotland. Please keep this list in alphabetical order. UK SIP providers looking to add their services can do so in the list below.
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Aloha Connect Part of the Aloha Telecommunications Group, a UK National operator. Aloha Connect provides a simple platform to provision a prepaid Free SIP trunk with options to purchase DIDs (numbers) from over 50 countries. Aloha focuses purely on the quality side of the market (especially in regards to international calling). UK and Mobile calls are some of the cheapest rates on the market.

1comms VoIP provider for UK Businesses. Sip trunk services, UK DDI's and Asterisk Support for business users and resellers. White Label fully itemised per second billing.

Direct Voip offers great value sip trunks for UK business users. We have great rates, UK mobile at 5p per minute, landlines 1p per minute. All calls are billed per second. UK geographical DIDs 75p per month. No contracts, no minimum call spend and no per channel or line rental costs. (Prices correct as of May 2012)

Foehn Ltd - Coupled with our open source expertise, Foehn is also one of the leading SIP Providers in the UK with 13 years of successful IP communications deployment among customers. SIP Trunking is more robust and cost effective than ISDN and as it is IP Telephony based has a number of additional benefits.

• PBX can be on premises or hosted in the cloud
• Enhances Business Continuity
• Disaster Recovery and Service Resilience
• Multi-site Rationalisation
• Voice & internet convergence

To find out more contact us http://www.foehn.co.uk/sip or over the phone by calling 0844 846 2323

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Geils Communications US based IP carrier serving global customers with custom services.

• Call center termination to the U.S. as low as $0.0059, unlimited $49
• SME Unlimited US $9.99, Global $19.99
• Virtual Numbers from 50 Countries
• Toll Free from 25 Countries

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Kesher Communications (UK) - Business VoIP Telecoms provider for small to medium sized businesses. SIP trunks for Asterisk and 3CX and lower call costs.

Magnetic North is an international provider of a wide range of online VoIP services including SIP trunking. Visit our UK site for more information.

Neuwise Communications provides SIP Trunking and SIP Peering Solutions for businesses/enterprise and retail subscribers, including Wholesale (A-Z and desired specific prefixes) termination services world wide using 4 POPs (Dallas, Singapore, UK and Netherlands).
Offering A to Z VoIP solutions including DIDs, Class5 full telephony services and features and HD Voice (recent Pilot)

Tekara VoIP - SIP trunking providers offering peering and termination for all UK and Internation destinations. UK Provider of VoIP and Numbering Services and cheap UK and Internation Calls. Business and Home VoIP Solutions.

Virtual Voice Connect Number 1 for business solutions in the UK, we are a hosted VoIP telecom provider for UK Businesses. Virtual Voice Connect provides VoIP DID numbers, number porting, IP Trunking, and guide you towards better trunking security and connectivity, as well the UK's cheapest SIP Trunks for just £2.00, available with a choice of DDI's. Call us on +44 (0) 844 310 4635 to find out how we can help your business today.

Tpad provides global SIP Trunking or IAX2 Trunking services to businesses around the world, along with high class wholesale VoIP / SIP termination, custom built SIP predictive Diallers, Call Reporting, Call Recording, pure A-Z origination, toll-free, DDI, DID numbers and asterisk telephone systems.

See also

• SIP
• SIP Trunking Providers
• VoIP Providers UK
• VOIP Service Providers Business Europe