Hi Claire,
If you are looking at a decent engineering course at a part time basis, you can consider University of Bradford's programme. They offer a part time BEng programme, which is open only to UK residents. If conditions do not permit you to exercise this option, then feedback from some of our esteemed members of this thread will do well; Open University (UK) and ERAU. Yet another option: Massey University(NZ) have been running a credible distance learning programme for some years now.
But most importantly, you have to know
what is it you are really after. Your choice of degree should reflect on your eventual career aspirations, preferably, so as to yield maximum benefit for
you, just like what another member mentioned earlier.
Idris
SIN