Did anyone answer the Count yet?
Can't be ass'd to read every single post...
1)What exactly are 'cor-blimey' trousers?
It's a play on the expression "Gor Blimey".
"Cor Blimey" trousers are made of corduroy. (Which is French for "Cloth of King", but was actually coined in Manchester when they were coming up with names for a new cloth).
2) And what is Sir Paul McCartney's sibling banging on about when he thanks someone for the Aintree Iron?
"Ain Tree" meaning "one tree", as previous poster indicated. The "Iron" refers to the shape of the the course itself, or an Iron Foundry in the area.. nothing 100% confirmed."
3) What are the origins of the colloquial word for an officer of the law: 'bizzie'
Probably derives from the phrase "Busy Body" when referring to the police, meaning someone who interferes in someone else's business.