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Who we are


As the Gas Transporters’ Agent we enable the competitive market and provide centralised information and data services for gas transporters and shippers in Great Britain.

We work hard to develop solutions to the challenges that will be faced by the gas sector over the coming years. Key to our success is the considerable expertise of our staff – many of whom have worked in the industry for many years.

Delivering services


Xoserve delivers a range of services to the gas industry as set out in the Agency Services Agreement.

These services include managing, on average 4 million customer gas supplier switches and handling around a million data enquires. It’s our responsibility to ensure that all users of the Gas Transporter networks are billed accurately. We invoice almost £4bn per annum on behalf of the Gas Transporters. 

Enabling change


The nature of our services demands that we have robust and responsive IT systems. We are constantly reviewing our IT estate and planning our Change Programme to ensure we retain our reputation for quality, security and reliability.

We work closely with the industry to develop and deliver requirements for the future whilst making sure we sustain the delivery of existing services and to facilitate introduction of new ones.

Sharing knowledge


We understand the importance and value of engaging with the industry and our Customer Teams established over a number of years ensure that we maintain close contact with our customers.

In addition to regular operational meetings and industry forums, we advise and support the industry on major issues such as Project Nexus to agree medium to long term requirements.


Xoserve news

Impacts Of The Seasonal Normal Weather Review On AQ2015
A number of changes to the Seasonal Normal Weather Review (SNWR) will impact AQ2015. For details on the changes, view slides presented by Fiona Cottam, Xoserve Performance Manager, at the AQ Forum on 25th November 2015 or view details on the Joint Office website. If you have any queries, please contact your Stakeholder Business…
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2015/16 Allocation Of Unidentified Gas (AUG) Table Approved
The Final Allocation of Unidentified Gas Table for 2015/16 was adopted at the February UNC Committee Meeting.  The new energy values will be used from 1 April 2015 onwards, with the first charges/credits being issued in May 2015.  Xoserve manages the contract with the Allocation of Unidentified Gas Expert (AUGE) on behalf of the gas…
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Gas Day To Be Amended
The aim of the EU Phase 2 Project is to deliver the Gemini and Gemini Exit system changes required to comply with the EU network codes that come into effect this year.  As a result of the implementation of UNC Modification 0461, from 1 October 2015, the UK market Gas Day will be amended from…
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Reminder: Disaggregation Of Multi-Metered Supply Points
Modification 0428, implemented on 1st April 2014, sets out the arrangements in place to create a population of Single Meter Points.  Users are reminded that the disaggregation of Multi-Metered Supply Points should be undertaken before 1st July 2015.  For further information, please see the Final Modification…
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