Oh yeah @TW sadly combining bath and utility is a no go, due to requirements to support the utility walls in the flat above (would make it a warrantable work).
Also the utility is currently my larder and coffee prep area which trumps all other requirements :)
Maybe lose the towel rail.
A corner loo might give more space.
Or just go for the toilet / shower combo.
Moving the soil is a pain though.
Combining the utility / bathroom could work and add more absolute and functional space.