Although these suppliers don't match your search for Toastmasters in Wiltshire, they are within approximately 40 miles and could still be of interest.
Butler Services - Yon Events
Toastmasters, Reading, Berkshire
Yonevents has changed name to House of Yon. This year Nicholas Yon will celebrate 40 years in the Hospitality industry.
(Toastmasters in Wiltshire)