I have no idea how well Auctionchex works for people banking in countries other than the UK.

But it seems that they are an ideal solution for my own circumstances.

https://auctionchex.com/index.php?ap=home&at=exchangedp

Regarding my email to them, they responded within 30 mins, probably immediately after their lunch-break. The response was from the owner.

I am certainly going to give them a try, I hate having money lying around "in theory" and not being able to put it to work.