Actually an interesting thought. The £85k is in fact not, its 100K euros, some years ago the £85k was in fact £75k when the Euro was weaker against the pound. When the pound went down the exchange rate meant that in broad terms £85k was closest to 100k euros.
https://ec.europa.eu/info/business-...ial-institutions/deposit-guarantee-schemes_en
I wonder if the UK government will keep this once we properly leave the EU. I can imagine some will push for removal, its a very pleb friendly and arguably business restricting (since its a levy) thing.
If they do keep it will they change the amount, would be a bit of a anti Brexit taking back control banner to have our protection for depositors permanently linked to the amount it was when we left the EU.