Ask around your local trade suppliers, but I would avoid the own-brand options as (a) they are often not that good, and (b) you can't get them from other outlets.
Fusebox seems to be the go-to for quality on a budget, and the compact RCBO tick the boxes of bring type A so fine with many electronic faults, and (b) double pole so easier to test as both L & N are open for IR test just by tripping them.
Wylex do the same, but a bit more expensive and they don't seem to be very good on long-term compatibility.
Hager are liked at the higher end, as are Schneider, and both of them have a good reputation for long-term support.