Solovair are great and British made. Dr Martens haven't been the same since the buyout, manufacturing standards and materials just don't meet that same standard of 10-20 years ago.
I believe Solovair actually manufacture in the old Doc plant as well which is kind of ironic.
If you're looking for something cheap however then just go onto Asos and look at the boots there. There's always plenty of off brand stuff being sold on the cheap. I'd spend a decent whack though, especially if you're getting boots you'll wear often.