A man was subjected to a prolonged sexual assault on a packed rush-hour Tube last week after getting on at Finsbury Park.

The 38-year-old victim got on the southbound Victoria Line train at 7.30am on Wednesday last week and was standing when another man stood close to him and pressed himself against him.

The attacker touched the victim inappropriately until he got off at King’s Cross – a seven-minute journey at peak time.

The suspect is white, about 5ft 7in and of slender build. He is believed to be in his mid-twenties with blue eyes and blonde curly hair. He was wearing a camouflage jacket and black jeans and trainers. He was also holding a bright rucksack and had a black earring in his left ear.

Investigating officer Det Con Suleman Yazdani, of the British Transport Police (BTP), said: “This was a disgraceful and prolonged assault committed on a busy commuter tube service.

“As you can imagine this was a frightening experience for him as he quite rightly did not expect or want this man to touch him. If you know someone who matches the description then please get in touch as your information could be vitally important.

“Unwanted sexual behaviour such as this will never be tolerated and we work closely with our partners throughout the capital to encourage victims to report offences.”

The BTP has recently launched a new Report it to Stop it campaign, to tackle under-reporting of assaults and raise awareness of the reporting services.

Anyone with any information can contact BTP by text on 61016 or by calling 0800 40 50 quoting reference 113 of 23/03/2017.

Alternatively, call Crimestoppers anonymously on 0800 555 111.