Lambeth Bridge, London, UK. 10th April 2017. The full force funeral of PC Keith Palmer, killed in the Westminster terrorist attack of March 22, takes place at Southwark Cathedral on Monday 10 April at 2.00pm after the funeral cortege left the Palace of Westminster flanked by a police black escort and photographed crossing Lambeth Bridge. PC Palmer’s coffin was taken to the Chapel of St Mary undercroft at the Palace of Westminster where it remained for 24 hours before his funeral. Credit: Malcolm Park editorial/Alamy Live News.