The annual maintenance shutdown of the MSF service to allow safe working on the masts and antennas will take place on the following dates:
29 June to 17 July 2026 from 08:00 to 18:00 BST (UTC + 1)
10 September 2026 from 10:00 to 14:00 BST (UTC + 1)
10 December 2026 from 10:00 to 14:00 GMT (UTC)
The transmission will be restored overnight whenever possible. If the weather is unsuitable for work to be carried out, then the service will not be turned off.
The signal is occasionally taken off-air to allow maintenance work on the masts and antennas at Anthorn Radio Station to be carried out in safety. A radio-controlled clock will not be able to pick up the MSF signal during these periods, so may drift off from the correct time.
The MSF radio signal is a dedicated time broadcast that provides an accurate and reliable source of UK civil time, based on the NPL time scale UTC(NPL).
If you are experiencing difficulties with your Radio Controlled product, please find advice and tips via the below link: