It takes about an hour to walk over to Hilbre, but the opportunities over there are superb. See here for more details of how to get there.
The point from which one walks out to the islands is only 15 minutes away from my house, so I visit fairly frequently during the summer. Marc Schmidt recently acompanied me over to the islands for an evening.
Here are a couple of pics I've taken on some recent visits over there.


If you're ever going over to Hilbre - let me know and I'll tag along!