car tyre help

So l got my brakes checked and fixed a couple weeks ago by kwik fit and the guy said I also need 3 new tyres and to get them done asap so I ordered the home service for halfords tomorrow as i'm working. I just went out to check them with the 20p coin (I know I should have checked before hand but was stressed as l'm going on a long drive next week) and only one looks bad to me? Just wanted to ask on here as i'm not a car person so how many of the tyres actually need replacing? The first tyre looks like it defo does but the others seem fine?