What if...?

If you're mobile phone supports it put your family numbers in the ICE facility. Its accessible from a locked screen so no passwords needed. Otherwise its a good idea for us all to have contact details of next of kin in the car. Two neighbours also have the our family contact details. Our family have a list of useful information (amount numbers, passwords, which solicitor has the Wills) emailed to them in a secure form, its updated a couple of times a year. I look at it all as insurance, if its there I won't need it.

In our last house, we had to have new floorboards fitted. My husband was only too aware of the likely cause of a huge brown stain near the fireplace!

As BlueSky has said, keep that information on you and if you drive, I would put a copy in the car.
Gymstagran I'm going to be found by a bailiff when a bill goes unpaid too long (although as I mostly pay by DD that might be quite a while) or when the neighbours complain about the smell, unless I collapse in the street and die in hospital. It doesn't bother me. It's just the way it is. I am happy living on my own and that is just a consequence.
My neighbour did send her grandson to my door to check I was ok when they hadn't seen me for a while. I had flu and it had been a couple of months.

I agree with Sparklefizz, a little forward planning will ease your mind. Without getting emotional, think in a practical way about carrying helpful information with you, and also about your wills and other instructions regarding your property, bank accounts etc. which you keep somewhere at home. Include a list of everyone who needs to be notified of your passing, computer passwords and memberships etc. Organise these important papers so they are all together and let your children know where they are.

Living alone my what if is how long would it be before someone found me if I died at home

Assuming your mobile phone were retrieved from an accident they would look at ICE.

BlueSky, worry not, assuming there were a bit of you left, DNA and dental records would be used to identify you!

I live alone and have thought ahead. I always carry ID, phone numbers of next of kin (son and daughter) and a card saying I have a pet at home that needs feeding and looking after.