Theatre director Omar Okai and his partner claimed the “humiliating and disgusting” homophobic tirade happened in central London on Friday evening.
Okai told the Evening Standard: “The back door was open so we got on and go straight to the front and put our Oyster cards on the machine.”
He claimed the driver confronted them and asked why they used the back doors, before adding: “I bet you like it in the back door anyway.”
The driver pressed the button at the top of his bus and informed the entire bus load of people that the bus wasn’t going any further and people needed to get off. After the couple got off the bus they realised other passengers stayed on. The driver then opened the front doors and allowed another lady to enter and then he drove off.
The couple have filed a formal complaint with Transport for London (TfL) and the police.
In a letter to TfL, Okai wrote: “I would like an explanation, not just an apology, as I will be taking it further.
“This kind of behaviour is not acceptable in any shape or form in Great Britain and as a British citizen born here, I am not accepting it.
“My partner and I were humiliated and intimidated, being made to leave the bus.”
TFL is investigating the incident. They said in a statement: “We are concerned to hear of this incident and are investigating it with Tower Transit, the operator of the 25 bus route. We expect the highest standard of public service from bus drivers.”