Teapot by South West Ceramics - It has their stamp on the bottom with the date 1989.
The tin of paint is the body and the paint is called "Telux"! SWC is printed on the front of the pot and on the back it tells you about the different types of tea you can find. This was one of Paul Cardew's early designs.
Sold on Ebay 5th May 2006 for £29.99