The amazing Bristol and London crossword

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Across
  1. 1. the old lady of Threadneedle st
  2. 3. the great siege of Tesco express
  3. 5. trotters, tripe and kidneys the market seller cried
  4. 9. A popular radio four game Baker st, bank, Balham, kings cross, Goodge st, ?
  5. 10. feed the birds tuppence a bag
  6. 11. The method mans abode
  7. 12. The scene of a supposed 25 year con
  8. 16. where monks go to drink their brew
  9. 20. Giovanni caboto's tower
  10. 21. a twist on a Wilkie collins novel
  11. 22. Cromwell, Shakespeare and the earl of Lauderdale reside here
  12. 23. I spy with my little eye...an ophthalmologist
Down
  1. 2. 1000 dead souls lay beneath this busy transport hub
  2. 4. 14 days from Bristol to New York
  3. 6. on the road with doctor foster
  4. 7. London parish officials came here to draw water
  5. 8. fancy a dip, a pool on a cliff
  6. 13. a portrait by jan van Eyck
  7. 14. A square once home to a cube
  8. 15. Larry lamb, phil Daniels, ray Winstone, Michael caine, kenneth cranham and Timothy spall attempt a robbery
  9. 17. a decently deposed titan of nefarious business
  10. 18. previously owned by thutmose 3rd
  11. 19. victor your not a young man anymore