Departing 27....may overfly Weston, with Clevedon on the right, if told to climb straight ahead, if on a noise abatement then would probably turn first, Im sure I'll get corrected if Im wrong!
Southeast....there isnt such thing really, everything tends to route CPT DCT ABDAL DCT BRI on a direct track from the east, FL220 by CPT then descending FL110, usually over Bath at about FL50, worked by London Control Sector 23 (134.75) then handed to Bristol Radar (136.07). Cardiff arrivals from the east are also handled by Bristol Radar, but are initially FL260 at CPT.
Bournemouth or Solent would not work this traffic at all as far as I know!
Dan.