I don't know how you can see anything from those bad pictures.
Rust, is part of cars in UK.
You won't find car for that price without doing some rust/body work etc.
surface rust, wouldnt be too concerned about,
you cant really let rust put you off, as it will be there on all old cars, unless its be repaired
I think your very foolish not going to see car.
Things are a lot clearer when looked at in real life. It might not be that bad in real life, it may also be worse, Also you may see other things that may need work,parts etc.
hence why you look at a car before you buy. Not many LHD in UK. So you can't be too picky. Otherwise, other option, import one from Europe etc
All the best.