It depends what you want really. Cobwebcrafts - which incidentally is me!- doesn't sell supplies, but you can always call in for a chat and a coffee.
D H Evans in Bury St Edmunds is a general tool and supplies store but with a large woodturning section. Elmers in Kesgrave ditto.
If you intend to call in on Nick Arnull give him a call first. He could be busy with orders.
Peter Child's you know about.
There's also Fakenham Tool & Equipment Hire Ltd, 9 George Edwards Road, Fakenham, Norfolk, NR21 8NL. Not the largest selection, but some tools, blanks, accessories etc.
There are others, such as Cambridge Wood blanks but they don't have a retail outlet.
Aside from that we're pretty barren really!