The British Transport Police has released CCTV images after an off-duty police officer was assaulted at Charing Cross Underground station.

The assault took place on Sunday 7th May just before 6am when four men approached the off-duty officer on the Northbound Northern Line platform and attacked him, stealing his phone and bag, which contained keys and a laptop.

The victim suffered a broken wrist, perforated ear drum and two broken teeth.

If you recognise the men in the photos, please contact the British Transport Police either by texting 61016 or calling 0800 40 50 40 quoting reference 102 of 7 May.

Alternatively, call Crimestoppers anonymously on 0800 555 111.