ACAS crossword (part cryptic, part rubbish, mostly logical)

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Across
  1. 1. (7) Quadrennial festival of running, jumping and throwing
  2. 5. (4) A man walks into a bar
  3. 7. (9) A bird of prey that is prone to getting grubby
  4. 10. (5,10) (Anag.) A gradual neon oak (STAFF)
  5. 11. (6) Orange and sounds like a parrot
  6. 12. (9,4) a religious way of storing dried grass
  7. 16. (5) The red tellitubbie’s favoured means of transport
Down
  1. 2. (9) British PM, named after Brighton shopping centre.
  2. 3. (6,9) (anag.) dumb tiger teaser (STAFF)
  3. 4. (8) (cryptic) Coastal meat
  4. 6. (10) traffic calming measure and children’s centre
  5. 8. (4) Keeps your teeth in place; mad, hungry, fictional fish.
  6. 9. (3) What the fish said when it swam into a concrete wall
  7. 11. (6) element; a good French motor vehicle
  8. 12. (4,5) (anag.) Scat frier (WORK BASED)
  9. 13. (8) Unfortunate paint spillage in cemetery (sports based)
  10. 14. (5) The severe rear of a boat
  11. 15. (6) Billionaire, keeps a rocket car in a cave, and has penchant for capes.