Happy birthday Lou

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Across
  1. 4. 'E mean mixed up; partner (5)
  2. 8. Tracey Neville's sport (7)
  3. 12. Law firm (10)
  4. 14. TV series; partner & PA (4,3,3)
  5. 15. Liverpool fan; not a partner (5)
  6. 16. Tennis championship (9)
  7. 18. 50 not out (4,7)
  8. 20. See 18 across
Down
  1. 1. English county; partner (4)
  2. 2. Mountaintop, nearly makes partner (6)
  3. 3. Nye ___, Labour politician; partner (5)
  4. 5. Resort for Super Personal Assistant? (3)
  5. 6. Dessert or, with 20 down, a soft toy (5)
  6. 7. Championship football team (7)
  7. 9. Sided mixed up; partner (5)
  8. 10. See 14 across
  9. 11. Arabic leader; financial regulation (4)
  10. 13. West Ham fan; partner (5)
  11. 17. Impair; spoil; financial regulation (3)
  12. 19. See 14 across
  13. 20. Feline (3)