Nuclear siren test due at Portsmouth naval base

The alarm, lasting one minute at 09:30, can be heard throughout Portsmouth and Gosport

Portsmouth naval base will carry out a routine test of its nuclear emergency siren.

The alarm at the base, that can be heard across Portsmouth and Gosport, is tested three times each year in February, June and October.

The test on Wednesday will involve a two-tone siren sounding for one minute at 09:30 BST.

HM Naval Base Portsmouth said the test, a statutory requirement, is being carried out in agreement with Portsmouth and Gosport local authorities.