A minute​’s silence will be held at 11am on Thursday 25 May in remembrance of those who lost their lives and all others that were affected by the attack in Manchester on Monday.

The silence will be marked at all government buildings and other organisations may follow suit.

Flags on government buildings will remain at half-mast until the evening of Thursday 25 May.

https://www.gov.uk/government/news/uk-to-observe-a-minutes-silence-for-victims-of-the-manchester-terrorist-attack