Sell-out 80,000 crowd expected after Diamond League meeting switched from Crystal Palace to Olympic Stadium Bolt's agent, Ricky Simms, said he was not aware of any change to the punitive tax regulations that have kept the triple Olympic champion away from Britain's grand prix events for the past three years, which means there is no prospect of the Jamaican returning to the scene of his triple Olympic triumph in Stratford, east London. Despite his absence, the decision to switch venues looks certain to deliver the biggest crowd yet for a Diamond League series meeting with some fans seeking to relive their Olympic memories and others who missed out on a London 2012 ticket looking to experience the £492 million stadium for the first time. Bolt apart, it should also ensure a top-quality field for what will be the largest and most highly regarded athletics meeting of the summer outside the World Championships in Moscow. Olympic heptathlon champion Jessica Ennis, who has never competed at the London Diamond League meet, described the news as "brilliant" and said she would be using the event as her Moscow warm-up. Double Olympic champion Mo Farah, who is training at high altitude in Kenya, also voiced his enthusiasm. "The atmosphere was electric during the Games," he said. I'll never forget it, so it's great that the British fans and athletes will get to experience that again so soon after the Games. The timing of the event could not be more perfect for organisers because, thanks to a fluke of the international athletics calendar, the London meeting falls on July 27 - the first anniversary of the Olympics opening ceremony. The meeting was originally scheduled to take place at Crystal Palace on July 26-27 and although discussions are still ongoing as to whether it will keep its two-day format or condense into a single day, officials have confirmed that July 27 will definitely be a competition day. The Crystal Palace meeting usually attracts a capacity crowd of 22,000 and UK Athletics confirmed that 15,500 tickets had already been sold for the two days of competition. Ticket-holders have been promised a full refund and priority booking for the Olympic Stadium meeting. The remaining seats are expected to go on sale in a few weeks" time.