I'm from The Netherlands, but I want my brakes set up the UK-way

And that is indeed because I've been riding motorcycles for fourty years and cannot get used to the front brake on the left hand side. That's gonna end in a crash for sure
So I did the left-right swap with the brake hoses (Merida E-Onesixty 900 with Shimano brakes). I didn't change the routing so the rear brake hose enters the frame on the left. No problem, it just doesn't look that tidy. Maybe I'll change it some day, but I'm not sure if the hose is long enough if it comes from the right.
You'd also have to swap the cable clamps left-right because one has three holes (brake, rear mech and electric cable) and the other one has one hole (dropper post). And that means re-routing the electric cable as well.