A slightly frivolous question.

I happened to be tidying up the DVD collection and came across A Year in
Provence. A few of the 'one liners' ran through my mind and one which
has always perplexed me is that Belgium makes the best CH boilers.

I've never actually seen/heard of a Belgium boiler.

Are any imported into the UK? Is there any truth in this claim?

(I'm not planning to buy one.)