Possible Clues:

• Part of Atlantic Ocean
• A shire is getting reshaped by this body of water
• Body of water west of Liverpool
• Body of water between Anglesey and Dublin
• In a manner of speaking, State spy comes between us and our neighbours
• Isle of Man setting
• Water around Isle of Man
• It's taught in schools to English in South Africa it's for getting across to Wales
• Man's here getting independent shares I distributed
• Water to west of England