Help with some vintage bikes I’m viewing this week

I'm going to view some cheap second hand vintage bikes this week. I've never bought a vintage bike before so not sure what counts as a good investment. I'd be grateful for anyone's feedback as to which ones may be the best to get (if any). In order of appearance:

1) Raleigh Topaz – 1980s – £80
2) Grenada BSA – ?1970s £50
3) Raleigh ??? Maybe 1980s £100

I'm mainly just looking for something to commute to work / around London on

Thanks!