On 20 April 2006 Noble took up the position of head coach at Wigan, nine days after the sacking of Ian Millward. Brian took over at the club during a relegation battle which at one point looked as though Wigan would lose, however he has been credited for keeping Wigan in Super League following a number of impressive performance. However, despite having just £60,000 available to spend under the salary cap, Noble bought Stuart Fielden and Michael Dobson from the Bradford Bulls for a world record £450,000. At the end of the season when the club's books were audited by the league's accountants, it was found there was an unauthorised overspend of £222,314, which led to allegations that the club cheated their way out of relegation by deliberately spending money they didn't have due to salary cap restrictions. However the club was eventually only found guilty of "breaching the spirit of the cap", by trying to restructure existing contracts.