Daniel King is aiming to prove himself to British Olympics selectors and win a place in the team heading for Beijing.

The Colchester Harriers race walker is bidding for a spot in the men's 50 kilom etre event in China and was disappointed not to see his name included when UK Athletics announced the first wave of endurance athletes for the Games.

But King is hoping a 20km walk will convince them that he should be heading to China in August.

He has already achieved a B-standard time of four hours four minutes 49 seconds and knew another sub-4h 7m walk - the time laid out as a recognised international standard - at the Race Walking World Cup in Russia two weeks ago would win him a place.

But he was disqualified trying to maintain a four-hour pace.

This left him with just one B-standard time, which wasn't enough for the selectors for the first wave.

However, is now looking to prove he is worthy of a place and has been told a good performance in the 20km at the European Race Walking Cup in Leamington on June 15 will enhance his chances of selection.

This will not guarantee him a place, but UK Athletics Olympic team leader Dave Collins has told the 24-year-old British number one that it may help convince the selection panel that he should be China-bound.

King said: "What I am asking is for them to consider me when the main team is selected in July and they will know how many people it will affect by selecting me.

"He (Collins) agreed that technically they could have selected me.

"He wants me to put more on the table and demonstrate form through other events.

"It is not a done deal, I'm not on the team, but there is a possibility, although it is a very thin possibility.

"There will be pressure on me at Leamington as I won't be looking to do another 50km event.

"I could pick up an injury as it is a very short space of time, just 12 weeks, to do three longer walks in.

"I have a qualifying standard, which is quick enough, however, Dave Collins is chairman of selectors and has a big part to play.

"As far as he is concerned, if I get a B-standard at 20km, I would have a case.

"It would not guarantee anything, though, as other selectors on the panel would have to make the decision."

King's personal best (PB) over 20km is 86m 14s, set in Lugano in Switzerland in March, and he realises he will have to better that if he is to achieve the Olympic B-standard of 84m 30s, however, he feels a strong walk at Leamington, even if he doesn't make that time, will be enough to put his case forward."If I only get close to it, it isn't the end of the world," he added.

"It is just about getting close and demonstrating that I'm getting there."