Whether you lawn is beyond repair and needs a complete over-haul or just needs a little 'TLC' to bring it back to form, I can advise you of the best course of action to be taken.
Whatever that may be e.g. cutting off the old lawn applying new topsoil and re-turfing, cutting off the old lawn and re-seeding, scarifying the lawn, top dressing and over-seeding or simply a 'weed and feed' treatment to bring your lawn back into shape.
I will always recommend what I believe to be the best option for your lawn and your pocket.