Teapot by Hall & Read

any idea who made it I can work out the age but not the maker

I think made by Hall & Read. These charts are helpful: http://www.photane.com/reference/ukdiamondregistrations.html
http://www.phoenixmasonry.org/masonicmuseum/Dating_English_Registry_Marks.htm
Janet

Ooh, the list of British designs registered to glass makers is quite easy to find online but I've never seen a list of ceramic registered designs (although the first three on the list look like they relate to silver or silver plate designs), so many thanks for that, Janet. I don't suppose you know of a list of registered designs and their ceramic makers post-1887, by any chance?

As far as I know, you still have to go in person to look up post-1887 numbers. Don't I wish.
Janet