JordanK's charger cradle is great for the USA steam deck charger but the UK one is never going to fit, it's just way too fat.
Instead I've hacked it Jordan's masterwork about horribly until it fits this 45W travel charger from Samsung. Because the earth pin folds down the charger fits in, though it does still protrude slightly.
https://www.samsung.com/uk/mobile-accessories/travel-adapter-ep-ta845-ep-ta845xbeggb/
The author remixed this model.