By the end of the Indian series, knee injuries had begun to hamper Toshack, and he only made the trip to England for the 1948 tour on a 3–2 majority vote by a medical team, despite being one of the first selected by the board. Two Melbourne doctors ruled him unfit, but three specialists from his home state presented a more optimistic outlook that allowed him to tour. The tour was to guarantee him immortality as a member of Bradman's "Invincibles". He grew tired of signing autographs during the voyage, and entrusted a friend with the task. As a result, there are still sheets circulating with his name mis-spelt as "Toshak". Between the new-ball attacks of Lindwall, Keith Miller and Johnston every 55 overs, Toshack played the role of stifling England's scoring. In one match against Sussex, his 17 overs yielded only three scoring shots. He finished the match bowling 32 overs while conceding 29 runs. At Bramall Lane, Sheffield, he recorded the best innings analysis of his first-class career, taking 7/81 from 40 consecutive overs, bemusing the Yorkshire spectators with his accent and distinctive "Ow Wizz Ee" appealing. Bradman considered his 6/51 against the Marylebone Cricket Club at Lord's as the best performance of all. He removed the leading English batsmen Len Hutton and Denis Compton, as well as Martin Donnelly and Ken Cranston. In particular, Toshack was involved in an extended battle with Compton before dismissing him; Bradman said that their duel was "worth going a long way to see". This performance helped Australia to take an innings victory over a team that was virtually a full-strength England outfit and allowed Australia to take a psychological victory in a dress rehearsal ahead of the Tests.