Dina Asher-Smith says her comeback from a broken foot to win World Championship silver feels like a dream.

The 21-year-old Orpington star ran a superb third leg to help the GB women's 4x100m relay team finish runners-up to the USA on a glorious night at the London Stadium.

Asha Philip burst out of the blocks and passed the baton to Desiree Henry, who sprinted hard to Asher-Smith. At the final exchange Daryll Neita was right up on the USA but she had the 100m champion Tori Bowie to contend with, and the American pulled clear just before the line, clocking a world leading time of 41.82secs.

The British quartet did however go one better than the Olympic bronze they won in Rio last year – and the world bronze they secured in Beijing in 2015 – racing home to silver in 42.12 while bronze went to Jamaica just seven-hundredths of a second behind.

Blackheath & Bromley AC star Asher-Smith, who broke her foot in February and did not lace up her spikes until six weeks ago, finished a close fourth in the 200m final less than 24 hours earlier to complete a stunning comeback to fitness.

She admitted: "I think I’m still in a a dream phase, because to me I didn’t even know if I was going to be here and then suddenly I was like okay if I go and do the relay, I might hopefully get a run, because I might not be fast enough to be in the team (individually).

“To transform that to winning a world silver, which is the highest medal I and we have ever won is absolutely incredible. I’m still very much in a dream state. All I'm going to say is never give up."

She added: "I'm building up a little collecttion after bronze in Moscow. We'll have to wait and see when the gold is coming.

"To upgrade from Olympic bronze to world silver with these girls has been absolutely incredible, and to do it at home means so much.

"Thank you so much to this incredible crowd. What a lift they gave us. We are so proud to win the medal in London."