One year on from the murder of a cab driver from Wallington in Sutton, his family is urging anyone who might know what happened to come forward.
55 year old Carl O'Brien was attacked on his doorstep on the 3rd of December last year, suffering multiple injuries. He died in hospital just before Christmas.
A man was charged with the attack but was cleared after a trial.
Detectives are now offering £20,000 to catch those responsible.
Anyone with information about Mr O’Brien’s death can contact the incident room on 020 8721 4005, or the police non-emergency number 101.
To give information anonymously contact Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.