Cream of Devon resorts: If you like a good dollop of history, geology and science to go with your bucket and spade, Sidmouth couldn’t be more appealing - at any time of year Sidmouth, one of Britain's most sedate seaside resorts, lies at the mouth of the River Sid near Exeter Forget seaside arcades - Sidmouth’s main attraction is an old telescope at the Norman Lockyer Observatory Dukes Seaside Inn has a prime seafront location, stylish bedrooms and serves 'very good' crab sandwiches