The legal team acting for Dwain Chambers will file papers against the British Olympic Association in London today in a bid to pave the way for him to compete at the Olympic Games in Beijing.

Chambers is barred from the Olympics under a BOA bylaw which ban drug cheats from the British team unless there are mitigating circumstances.

The 30-year-old sprinter knows that having served a two-year suspension for using the designer steroid THG there is no chance in pursuing the mitigating circumstances route through the BOA.

Instead he has decided to go directly to the High Court and the necessary documents will be served by hand by his representatives at the Queen's Bench instead of being mailed from his solicitor's office in Leeds.

"All of the paperwork has been completed and to speed things up will be delivered personally to London," said Nick Collins, his Leeds-based solicitor.

Collins hopes the BOA will agree to the case being heard next week, before the British Olympic trials take place in Birmingham the following weekend.

Chambers was well inside the qualifying time for the British team when he ran the 100metres in 10.05secs in Sofia on Monday.

A victory at Alexander Stadium where the heats take place on the night of 11 July, followed by the final the following afternoon, would normally guarantee him selection.

But his barrister Jonathan Crystal will need to convince the judge at the hearing the BOA regulation is unfair.

Meanwhile, Sir Keith Mills, one of the key figures of London's successful Olympic bid, is tipped to become the next boss of Sport England.

Mills, a director of Tottenham and the creator of the AirMiles loyalty scheme, has held recent talks with Government ministers about becoming chairman of the quango which is responsible for developing grassroots and community sport.

Mills is considered an ideal candidate to deliver on the promise made during the Olympic bid to get millions more Britons involved in sport by 2012.

The Department of Culture, Media and Sport are expected to make an appointment in the coming months.

The job has been vacant for seven months after former chair Derek Mapp quit in protest at a government U-turn on the quango's role.