Thanks @Bainbridge - I had completely forgotten about Little Greene. I'd used it before on an old place and seem to remember being happy. Just ordered 1L of the Intelligent Exterior (!!).
I was busy (painting!). I use a lot of Little Greene but I think Benjamin Moore is probably the current best rated among the decorators who notice paint quality. I tried a tester and it was very good, I've yet to have a chance to use it on a job.
Thanks @Bainbridge - I had completely forgotten about Little Greene. I'd used it before on an old place and seem to remember being happy. Just ordered 1L of the Intelligent Exterior (!!).