This image shows a man police want to speak to after a woman had her mobile phone snatched whilst on a Jubilee line train at Bermondsey Station at around 1.30pm on 10 December 2012.

Detective Inspector Jim Chamberlain said: “Incidents of this nature are frightening and intimidating for the victims involved and we are determined to find those responsible.

“Officers investigating each of these cases have carried out a number of enquiries to try and establish the identity of these people, including speaking to witnesses and circulating images on police intelligence systems, but to no avail so far.

“We’re now asking for help from the public to identify them. If you know any of these eight people and can tell us who they are, we want to hear from you.”

DI Chamberlain added: “A few simple precautions can help protect your belongings. Remember to zip up your bags, keep your jewellery, mobile phones, purses, wallets and MP3 players hidden and stay alert to what’s going on around you.”

Anyone with information should contact British Transport Police on 0800 40 50 40 quoting B14 LUA of 06/03/13. Alternatively call Crimestoppers on 0800 555 111.