Drop box has one for just under £17 a month for 3TB storage, according to their blurb.,
Once a file is added to your Dropbox, it's synced to our secure online servers. All files stored online by Dropbox are encrypted and kept in secure storage servers. Storage servers are located in data centers across the United States. Additionally, storage servers are available in Australia, the European Union, Japan, and the United Kingdom for eligible Dropbox business users.
i suppose you could use Micrsoft 365 family thing for £7.99 a month, you would have to plat the backup as it is only 1TB per account, but you will get 3TB split between three accounts.
You could go for the single version of MS 365 and then pay a bit more for extra storage.
i have seen this,but I don't know where the servers are based, have a look and see, but the price seems very good.
Called Idrive.com
Myself i still back up to a external drive,
Adrian
Desktop machine Ryzen powered with windows something or other.
Plusnet FTTC