Poldhu Cove on the Lizard Peninsula.
This wasn't even low tide and there was too much beach to fit on one photo (this is 3 stitched together).

Poldhu is perhaps best known for being the site of Guglielmo Marconi's first transatlantic radio message in 1901.

The building at the end of the headland was originally the Poldhu Hotel, built to house the workers at the wireless station. It is currently a care home