Cryptic Stuarts

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Across
  1. 3. a heavy planet asks for addition (7, 4)
  2. 8. Is the famous bus company home? Yes they are (9,3)
  3. 10. bird has to be held (5)
Down
  1. 1. Sovereign of the Seas pound for pound (4,5)
  2. 2. attempts to realign entrance (5)
  3. 4. A whole religion takes arm in Mckellen's first (8)
  4. 5. Nadal is playing Nadal! (7,5)
  5. 6. walk only in the middle and end seems a straight ode (6)
  6. 7. no longer allow video game Lara to attend (8)
  7. 9. one with many (8)