From April 1, Teignmouth, Shaldon, Dawlish and Dawlish Warren beaches will introduce a dog ban.
See more... https://www.middevonadvertiser.co.uk/news/paw-sing-for-the-summer-675720
The enforcement will likely be handled by personnel employed by the local council or relevant authorities responsible for managing and maintaining the beaches. Signs will likely be posted indicating the dog ban, and members of the public are encouraged to report any violations they observe.
Information about dogs on Dawlish Warren beach can also be found in this article.