I have just spoken to a vet in a city 22 miles from where I live. They have Lucifer.
How he got to Peterborough, I will never know, but a lady in that city found him wandering round her house. She took him in and then decided to have him spayed. (Yes, spayed - she thought he was female.) After spending his time on the operating table, the vet discovered he was male. Checking with the lady, she discovered that she had only had the cat 3 weeks and that she had found him.
The vet asked if she would mind if she checked for a microchip. The lady agreed and voila! It's LUCIFER!
I am so happy!! I am leaving work early and I am off to Peterborough to collect Luce tonight!!!
Thanks to all of you who offered your prayers and chanting - especially you, Chris.