British Transport Police have issued images of a man with a distinctive leg tattoo they want to speak to about a homophobic attack.
A police spokesman said the two victims were walking through Bank station at around 4.45pm on November 12 when a man approached them and began verbally abusing them.
He followed the couple before kicking one of them and punching the other.
Officers would like to speak to the man in the image as they believe he may have information to assist their investigation into the hate crime.
Anyone with information is asked to contact British Transport Police by texting 61016 or calling 0800 405040 quoting reference 2300134350.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.