Following the terrorist attacks and ensuing deaths in Barcelona and Cambrils, it is appropriate to fly flags at half-mast on Friday 18 August.
HM Government guidance prescribes one day of half-masting.
Previous incidents have seen three days of half-masting, however, so flags could also fly at half-mast over the weekend.
In the UK you may fly the national flag at half-mast whenever you feel it is appropriate.
You may also fly the flags of Spain and Catalonia at half-mast.
If you do so alongside a UK national flag, however, the latter must also be at half-mast or removed.
You should remove any other national flags, and all other flags in the same set must be at half-mast.
Special provisions apply where a flag cannot fly at half-mast; for example, if it is on an angled pole projecting from a building.
Here you may add a black cravat or ribbon to the top of the flag, closest to the flag pole.
For full guidance on flying flags at half-mast, see Flying Flags in the United Kingdom, free to download here.
Our thoughts and prayers are with the people of Catalonia and the families and friends of those killed and injured.

