From September to December 2008, she appeared as Mrs Johnstone in the long-running UK tour of Willy Russell's musical "Blood Brothers", succeeding Linda Nolan who left due to illness. The producer of the show, Bill Kenwright had been trying to persuade Webb to play the role for around 20 years and she was only free by chance. As Nolan was ill, she had just a week and a half to rehearse, around half the time normally expected for the rehearsal of such a tour. Birmingham-born Niki Evans was playing the role in the West End at the time, so while the tour visited Birmingham, Webb briefly took over in the London production to allow Evans to play her home city.