MAKITA BO3710 ⅓ SHEET SANDER 240V @ Screwfix.
The next cheapest is through Amazon, £58 but that is 110v version. I ended up getting that as I have a transformer, 240v is more expensive.
Available for delivery and collection at the time of posting.
I'm planning on using this "hand" sander for sanding the original floorboards in my sons bedroom. X)
Hope this is useful for someone...