[CdM] No, it was a 7. Remember that each row, column and 3x3 block have to contain the numbers 1 to 9.
Anyway, I only need 3 to get out, so crafty use of Penelope's Pop-O-Matic should help.
POP-chunk! 17
Blast, overshot. That puts me at London Bridge with Miss Scarlett and a dead whale.

The answer is "Esther and Abi Ofarim".

rattle rattle rattle--...clunk!. Oh dear. My dentures are out.
Onto the dice roll... different-rattle-different-rattle--plop! Ah, two, doubles, roll again... dr-dr-dr-p four doubles, roll again... plop six, doubles, roll again... eight... ten... twenty, do I hear twenty? Twenty-five bid? Twenty-five, do I hear?

All my money on red. C'mon red! Please God, redredredredredredred...

Anyone lend me a pound?

POP-chunk!. Oh. Uhm, Western Philosophy please.