22nm after take off, mid point between Charlton Park(Private) & Fairoaks (London) the baggage hatch blow off which then could caught & wrapped it’s self firmly around the right hand tail elevator. We immediately lost lift and declared an emergency with ATC who had us on a basic service, lucky we were within distance of a 770m grass / gravel strip between some solar panel farms. Other than the damage to the elevator and hatch looks like we were extremely lucky to walk away unharmed.