Good interesting pics. The East Coast thinks they're the only ones that are eroding, mind you the worried ones are those that bought houses set back from the coast and now they are part of the beach, unlucky.
Those houses down by Caldy steps look particularly vulnerable. Okay, they have big gardens, but you can tell by some of the out-buildings and summer houses now teetering on the brink that the cliff is still receding, despite boulders being placed at its foot.
Is erosion all due to the action of the sea I wonder, or can land drainage also eat away at the soft boulder-clay cliffs?
The problem with defending against erosion is that it is a natural process, and what is lost from one area is usually deposited down the coast, forming a defence there - so interfere with this, and the likely outcome is short-term success in a very specific spot, but much increased damage elsewhere.