Electrical testing will take place in the Palace of Westminster  Sunday 26 November, Sunday 3 and Sunday 10 December, beginning at 8am and ending at 5pm on each day. There will be multiple short power outages during each day. All electrical services will be affected during these outages.

If you work in the Palace you should shut down any PCs and work on laptops where possible.

 Support services will be on site for the duration of the tests and announcements will be made before each one.