I think in theory you can still order Rebas, X Fusion, Fox etc with QR (just not sure what UK stocks are like).
Might also be worth widening your options by switching to though-axle. A new axle / hub / wheel might be a fairly cheap change.
I recently went from a Reba to an X Fusion Trace (changed axle at the same time) – very impressed with the quality and performance (it most definitely isn’t a low end fork).
Upgrade list both Slide and Trace in 1 1/8 steerer – so they are easily available. Both are internally adjustable to 100mm.
CRC had them in, and I think there were also some Fox at JE James http://www.jejamescycles.co.uk/fox-32-talas-29-120-fit-rlc-1-1-8quot-15qr-wht-id81027.html