Sanders is one of five British medallists so far

Britain won a record 10 medals, but Collins says the most impressive improvements had been less tangible.

"People like Phillips Idowu and Nicola Sanders have done very well," he told BBC Radio Five Live's Sportsweek.

"But the most satisfying thing is the team's attitude - there's been personal bests and juniors coming through."

Interview: UK athletics performance director Dave Collins

Idowu (triple jump) and Sanders (400m) both took gold with superb performances on Saturday, and Jason Gardener (60m) and the men's 4x400m relay team followed suit on Sunday.

Craig Pickering (60m), Kelly Sotherton (pentathlon) and Nathan Douglas (triple jump) all took silvers and bronze medals for Robert Tobin (400m), Martyn Bernard (high jump) and th e women's 4x400m relay team took Britain to the top of the medal table.

And the likes of Douglas, Bernard, pole vaulter Kate Dennison, sprinters Ryan Scott and Jeanette Kwakye and 800m runner Marilyn Okoro all set new personal bests.

Russia won 15 medals in total, but Britain finished at the top of the table after winning more golds than any other country.

606 DEBATE: Your thoughts on the performance of British athletes

Disappointing overall performances in last year's Commonwealth Games and European Championships prompted severe criticism of British athletes and the structure of the sport in Britain.

But Collins said he can see a brighter future ahead.

"It's the manner and attitude of what has happened which has been the most impressive part of the Championships," added Collins. "We've worked very hard over the last two years to make that change.

"We always had individuals who had the ability and drive to succeed. What we've done is to cluster those athletes with strong coaches and world-class support in high-performance environments.

"It will take more time and one swallow doesn't make a summer, but it's very satisfying so far.