Dad's Bday Puzzle

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Across
  1. 6. Hideout with time and energy, after aluminium. It's slightly undercooked (2,5)
  2. 7. Leader of rebellion of the Iceni against Roman rule in 61AD (7)
  3. 8. Half tuna cross with eel heart, plus dorado tails, for black and white cat (6)
  4. 9. Free for over 60s (12)
  5. 11. UK's first national walking trail, opened in 1965 (6,3)
  6. 15. The Taskmaster's miniature assistant (6,4,5)
Down
  1. 1. Oxford United's top goal scorer in a single season (3,8)
  2. 2. Wine, fortified in importance (4)
  3. 3. 61st best city in the world in 2023 (7)
  4. 4. Raptor studied aloud, oddly entrick running back (3,4)
  5. 5. Connected amidst internet hellscape (8)
  6. 10. Italian bread for loungewear? (8)
  7. 12. Gaelic name for archipelago whose Old Irish name translates to "islands of the young pigs" (7)
  8. 13. International dialling code for Australia (5-3)
  9. 14. 5 points in rugby: attempt (3)