Mechanical engineering could also be a very good pick.
Personally, I would avoid aeronautical and software as these fields are getting quite saturated.
Civil as well could be a potentially bad pick if you want to stay in the UK because of an increasingly trend of lack of investment into infrastructure in the UK and an ageing population so less demand for housing and office blocks. But still could be okay.
tbh studying any type of engineering at a reputable university is never a bad idea in the current economic climate.