Any tourist visa can sort their stay in here. The luck ones usually from south Brazil usually have their EU ancestor citizenship (former german, italian and polish settlement back there in the 50's after the world war) so before brexit they could stay here indefinitelly with no hassle. Top reason is the current exchange rate as highlighted by the fellow punter above, no doubt! The average punt price back there is 250 BRL, roughly 30 quid. So upgrading the earnings to 200 quid an hour in here seems a hell of a good business, innit?
Punting Brazilians in London is not very different from any other etnicity: Once well reviewed and good inteligence info is in place, and they can actually speak english, you can't go wrong. TOFTTs are the big gamble: it can be a hell of a good punt or it can't be a B&S, google translator comms, middle mans, maid, Sergeys and everything else that spoils the fun....
Some interesting local link for windowshopping, whenever you guys wanna book your sex vacation in south america for £30/hour:
External Link/Members Only (equivalent of adultwork for them) just type the city name and have fun...