70th Birthday Adventure

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Across
  1. 4. Enigma
  2. 5. Wimbledon best seller
  3. 8. Travel on foot
  4. 11. Academic institution
  5. 12. Motorway speed limit
Down
  1. 1. Bubbles
  2. 2. Flat bottom boat
  3. 3. Rachael Monica and Phoebe
  4. 6. Anniversary
  5. 7. Flowing water
  6. 9. What you make me do!
  7. 10. Suspension Tower Wooden