After twenty years my Multiyork 3 piece suite has had new covers from Plumbs and looks fine except for one chair which has a hugely sunken seat. It is the one my husband uses and I blame the way he used to drop into it. Anyway we can no longer get away with putting cushions under the seat. I asked Plumbs what it would cost to mend it. I was told that it would need to be reupholstered and would cost from £900. All the cushions are fine. So decided to look for a coordinating leather chair. Not sure where to buy it. Have been pleased with Multiyork except for one problem and I know someone else who has had the same. The cushions kept slipping forward when sitting on them. I had two sets of covers and it didn't make any difference which were on. One set was silky but the other was a kind of tapestry.However, when Plumbs supplied new covers a couple of years ago the problem disappeared. Now I am wondering if the same thing would happen with a leather chair. Also, would appreciate advice on whether John Lewis, Parker Knole or other would be a good way to go. I really want a good framework, even if my husband has now learned his lesson. By the way, he is not overweight! Would be so grateful for any advice.