Birthday boy

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Across
  1. 2. Nickname at University (Ctrl, Alt + Delete) 6
  2. 5. Uncle who influenced hoarding habit 8
  3. 7. Film released in 1971, are you feeling lucky? 5,5
  4. 10. Adores a Stone Circle [anag] 11
  5. 11. Wallace's mechanic
  6. 12. He said, "If you want to master something, teach it" 7
  7. 13. Bright Fame 6
  8. 15. "Put some spirit into it", sumo phrase 8
Down
  1. 1. Mr Benn's anniversay 5
  2. 3. Circuit designer, maybe 8
  3. 4. Father of Radar minus the power 6
  4. 5. 23 June, every year 9
  5. 6. F1 backward, according to Murray
  6. 8. Elated 5
  7. 9. Treat from Grasmere 11
  8. 14. La Serenissima 6
  9. 16. System design principle [acronym] 4