According to IMDB (here) and AI (below) Jimmy was involved in the 2018 SUTC show on October 26th.

In previous years (see here) Jimmy has been a supporter of Stand Up to Cancer (SUTC) but I cannot find any evidence that he was involved in the 2018 campaign. Unless he recorded a video promo message (there’s nothing on the SUTC official channel – here).

None of the press from C4 or the RTS or even Radio Times mention his name, that I can find. There was a C4 press release in 2017 (here) that talked about SUTC and said that the production job was being awarded to Fulwell 73. Jimmy’s name was mentioned as one of a list of people that had appeared in Fulwell 73 productions – but that’s not SUTC related.

He def wasn’t in the actual live show as he had a gig that night in Brussels (on his Best of Ultimate Gold Greatest Hits tour).

As a C4 stalwart its quite possible that he would record a message for the show (or as pre-show promos) – but I can’t find the evidence to be 100% certain.