Ian Henderson was pushed off his bike outside the US Embassy in Grosvenor Square, Mayfair, on the morning of January 28 after warning the rider for cutting him up.
According to the Evening Standard, the cyclist shouted “You’re too f***ing slow”, pushed him to the ground and rode away, ignoring the shouts of those who witnessed the incident.
Mr Henderson, 55, told the Standard: “My bike went left, I went down and I saw a brilliant white flash as my pelvis exploded.
“Cyclists and car drivers behind us were horrified. They shouted at him to stop and he looked round, so must have seen me on the ground, but kept going.
“An ambulance was called, the police arrived, my bike was taken care of and I was once again reminded how kind most people are. I also realised that I wasn’t going to walk away from this one – I couldn’t even sit up without extreme pain.”
Mr Henderson also said he was shocked that a fellow cyclist could act in such a way, saying that he likes to ride to work because cyclists look out for each other.
According to Mr Henderson, the attacker was a man aged 45 to 50 years old, with a grey beard and wearing dark waterproofs with orange detail. He was riding a white Bianchi mountain bike with black lettering.
Anyone with information can call police on 101, quoting 6504284/15. Alternatively contact Crimestoppers anonymously on 0800 555 111.