IBF heavyweight title holder Antony Joshua’s sparring partner Frazer Clarke has recalled the horror of yesterday’s terror attack in Westminster, London.Team GB development squad member Clarke, tweeted: "I can never unsee what I've just seen."Tweeting from the lobby of the Palace of Westminster, the 25-year-old tweeted what he saw and that he was fine.However, he also tweeted about slain police officer Keith Palmer.Clarke was in Westminster with the development squad for a community event at the Houses of Parliament before he was caught up in the attack.Clarke has ambitions to be in the GB squad for the 2020 /games in Tokyo, and he tweeted that he and the team made it out safely and was upset by what had happened on Wednesday.The men's super-heavyweight won a test event in Rio before Team GB’s record-breaking tally of 27 golds, 23 silvers, and 17 bronzes, finishing second on the table with 67 medals behind only the United States.Team GB released a statement on the attacks and said: "No members of the British Lion hearts team or coaching staff were harmed in the incident and all of the boxers and staff are safe and well."The boxers and staff have spoken to the police and security forces and are assisting them with their enquiries into the incident. The boxers are due to compete in the World Series of Boxing against Italia Thunder and are very keen to fulfill this despite (Wednesday's) events."The team is completely focused on preparing for the fixture and will not be making any further comment until after the match is over."The boxers, coaches and everyone connected with GB Boxing and the British Lion hearts would like to express their sympathies to everyone that was hurt in (Wednesday's) incident and their sincere condolences to all of the families that have lost loved ones."

GB boxing suggested that the team would still be in the ring on Thursday competing against Italia Thunder in the World Series of Boxing.

Clarke finished his commentary on the attacks by saying that he and the team were safe, but asked his followers to think of everyone who is not.

Clarke concluded in a poignant tweet: “Everyone spare a thought for those that never made it home today."