Campbell is one of the elder statesmen of British athletics

Campbell is Britain's most successful sprinter since Linford Christie, but has struggled for form in recent times.

"This is huge for me as my form hasn't been as I'd have liked," he said.

"What do I want to do - how many years do I want to go on for? These are questions I've had to ask myself. This weekend could be a defining moment."

Interview: Darren Campbell

Hopefully this great crop of sprinters that are coming through will be what makes me retire Darren Campbell

Campbell is an Olympic 200m runner-up, world 100m bronze medallist and was a member of the 4x100m gold medal-winning relay team at the Athens Olympics.

At 32, time is hardly on his side, and he feels some of the flak he received for his part in England's disappointing Commonwealth Games campaign earlier this year was unjustified.

"Sometimes the media forget how successful I have been over the last 10 years, so in that respect I think the criticism I got after the Commonwealths was disrespectful," he said.

"In the last 10 years I have always put myself up there and delivered. So to not deliver on one occasion and be criticised was totally disrespectful."

But despite his age, Campbell said retirement was not something that would happen automatically just yet, and he hoped he could continue, like his mentor Christie.

"Hopefully this great crop of sprinters that are coming through will be what makes me retire," he said.

"I know that was one of the things Linford waited for - somebody to go out there and almost make him retire.

"But at the moment, why should I? If I'm able to do what the youngsters can do and perform on the highest level, then it's not a problem.

"If I don't make the team, then I don't go - it's as simple as that."