I'm an avid reader of a blog called Headforpoints - and they've got something on there I've not seen mentioned yet.
Double base points if you book via their link. From a quick look it seems to be the same rates for the hotel I usually use (HI Reading West), but the 5000 point package isn't available. As a result it's a net loss, so I won't be using it, but it may be worthwhile for others.
Disclaimer: I've no connection to the blog other than being a regular reader!
http://www.headforpoints.com/2016/06...your-bookings/