About five years ago I finished paying off my mortgage (not a stealth boast, I'm old). I assumed I'd receive the deeds from the building society but I never did and I never got round to following it up. I've been worried on-and-off ever since that I should have done it and I've made a terrible mistake, and I've been prevaricating about doing something about it because I don't know who to contact and what to do, and I'm very scared that I'll find out it's become impossible and I'll never be able to prove ownership. I'm in Scotland if that makes a difference. Can I do something about it, or is there a time limit?