Thanks for the greeting. I didn't think anyone here knew who I am.
I only used the WD40 because my father said it was ok. He's the general handyman, not me.
It is a very loud sqeak though. One of the neighbours told me to shut up when I was testing the brakes on the hill outside the house.
I thought about re-aligning but the the brakes stop the bike very well, they just make a lot of noise!
I do understand the brake pads can be realigned or slightly ground on the leading edge to cure the problem.
I don't know what that means, to grind the brakes.
Edit: WD-40 is a good cleaner; not much of a lubricant. Bike shops have better stuff. They tell me you should use a dry lube for dry conditions, and a wet lube for wet conditions.
So a lubricant is what I need then? Sounds a bit silly to put lubricant on brakes...