When I looked most of what I had was "replaceable" in one way or another.
Almost every company I deal with has been in business for a very long time. I trust them. If I didn't I'd find someone else.
Many companies do "eStatements" these days.
No one wants to see original documents these day for straightforward transactions, except maybe title deeds, passports, educational records, birth and death certificates and the like. Those with more complicated affairs would need to ask their professional advisers.
I've been leaving key documents in a bank safe for many years. They'll take an A5 or A4 envelope (from memory) without charge.
I started going through all of my paperwork and putting everything that I did not need in a box. Then I tried putting it all through a toy shredder and found life is to short to spend days shredding - and the d@^^^ thing kept jamming.
So I looked up professional shredders on the net, found one nearby, packed it all into shopping
bags and dumped it into their bin. $20 and it's gone. I've done two loads so far and that's gotten rid of most of it. The rest will just about go though the "toy" shredder.
The hardest things to get rid of is d@^^ X-rays. Just about indestructible. Now I know why the doctors give them to me. In the end I cut them into smaller pieces and fed them through the toy shredder. Only had to dismantle it once to get the tiny bits that were jamming the safety
I'm down to keeping one copy of anything and have gone from what felt like dozens of boxes of papers to a couple of folders.
From memory the tax dept only wants records kept for 5 years. What are they gunna do? Never heard of anyone being shot for not keeping a record
My big worry was that anyone who got their hands on my records could say that they were me. Not going to happen now. No records...