BoxRec

Kelvin Seabrooks had a record of 20-13 when winning the IBF bantamweight title, he had lost to most of the rated boxers he had faced including a 5 round loss to Pat Cowdell.
He beat a Columbian in Columbia to win the title, defended against Thierry Jacob in France, and made anoth 3 defences before losing to Orlando Canizales in a 15 in one of the fights of the year.

http://boxrec.com/list_bouts.php?human_ ... &cat=boxer

Jason Booth. From being a tramp, basically, to fighting for the World title.

All the talk of Manny Steward over the last week certainly brings Dennis Andries to mind. Going from 2 failed British title attempts to finally win a Lonsdale belt then becoming a 3 time World champion.

Vivian Harris. Wins against Hurtado, M'baye and Urkal - seems to be on the brink of a mega fight against Mayweather, appearing on his undercard against one of the worst boxers ever seen to look good against.

Proceeds to punch himself out, suffer a heavy knockout and before you know it he is having to travel to Doncaster to lose for future shots at a title. Then ends his career getting knockout by anybody and everybody

Him or Carl Thompson. From being out on his feet, career over against Rothmann, then bingo.
Then he stops an unbeaten David Haye

I know it isn't British and its an obvious one, but i would go with foreman.
from a menacing liston mirror image to the jolly big guy

Dick Tiger: Lost 4 fights in a row after arriving in Liverpool from Nigeria, went on to win world titles at middle and light-heavyweight.

jersey joe walcott

Graham Houston wrote:Dick Tiger: Lost 4 fights in a row after arriving in Liverpool from Nigeria, went on to win world titles at middle and light-heavyweight.

Superb call. That's the voice of experience speaking