BEagle - posted to Brize? Then I would buy houses in and around the places ringed:
All of these areas have houses that would be affordable (no I wouldn’t buy a house within Swindon!) and are 30-40 minute commutable to Brize (especially using Home to Duty). Cartoontown near Brize is massively overpriced for what it is anyway, and so is Whitney. But go a little further afield there are some nice places to live that is affordable. Didcot and Wantage are possible too, but more expensive than those ringed.