Police have released CCTV footage in the hunt for a man who sexually assaulted a woman as she walked to the gym.

The 25-year-old woman was approached from behind and sexually assaulted in Penny Brookes Street, Stratford.

Detectives say they want to speak to the man in the CCTV footage, who is described as being of medium build and wearing a dark jacket with a light fur trimmed hood.

He was seen wearing a rucksack and dark tracksuit bottoms with writing down the leg tops.

Anyone with information on the assault, which happened at some point between 6.10-6.30am on Friday 26 February, should call police on 020 8217 5414, or Crimestoppers anonymously on 0800 555 111.