As I may have mentioned, my understanding of, and interest in, British versions of puddings is strictly limited to Sticky Toffee Pudding. (Sorry, had to step out a moment to check some addresses). I found out about STP when in England about ten years ago. While hiking in the lake district I stumbled upon a hotel hosting a meeting of the Sticky Toffee Club, where I learnt that STP was not only an addictive guilty pleasure, but it was also a moveable feast and the Club had a circuit of such feasts planned over the weeks to come. Somehow I had more BritRail passes than I knew what to do with, and so spent the next few weeks following the circuit, scarfing down puddings, and hiking off the calories in the days between meetings.
Since returning to the States I've often longed for STP and I finally located a lady in Texas who bakes and sends out what seems to me to be an authentic STP. You may want to try it, but be warned it is extraordinarily expensive, although each cupcake-sized pudding can be considered two servings if you consider the calory count. https://stickytoffeepuddingcompany.com/
I think the club in England still exists; here's a glimpse of their activities: https://www.facebook.com/Sticky-Toffee-Pudding-Club-257742077596572/