Generally, panel shows on UK television include few female guests. Most have male hosts and male captains/regulars. Even omitting the regulars, the guests are mostly men too. It is a problem that half the population are under-represented in these long-running TV and radio shows.
Is the situation really that bad? In short, yes. I've compiled some statistics for current, long-running, shows from IMDb (and other sources) to illustrate the point. Many of the panel shows listed below are comedy shows and I've made a non-exhaustive list of funny women to provide inspiration for the show makers.