@jon This is nearly that, fwiw: https://lovespace.co.uk/how-it-works/

12 quid a month to store a big box, though.

@jarkman yeah, that’s about 4x as much as I’d be looking to pay, especially since it costs £8 to get a box sent back to you as well. I’d maybe be ok with £6/month/box if I wasn’t also going to get billed for shipping.