Bowls England - National Governing Body for Outdoor Flat Green Lawn Bowls in England.
Steeple Bumpstead Bowls League
In addition to the above examples and other online vendors (e.g., Amazon) new and used bowls items are also available via Ebay, Gumtree, Preloved and Vinted.
Clare Bowls Club - 1 Station Road, Clare, Sudbury CO10 8NJ