Hello there, @Philipt.
You can create cleaning accounts that will serve as a Factoring Company in QuickBooks.
Once, done, you can now move money from one account to another account using the clearing account.
Also, if you need some references in the future, you can always access our site: Help articles for QuickBooks Online.
Please let me know in the comment section below if you have any other questions. It'll be always my pleasure to lend a hand.
Thank you for getting back to us here on the Community page, @philm1.
You can use that account type though. In the UK version of QuickBooks Online (QBO), the Cash at bank and in hand account type is equivalent to the Bank account type in QBO US.
For additional reference about understanding the chart of accounts in QBO UK, read this article.
Get back to me if you have any other questions. I'm always here to help however I can.