http://www.legislation.gov.uk/ukpga/1974/53
There's the link, it's a bit of a read but all the info is there.
I've just re read your post and realised that you may be applying for a Scottish Licence. The legislation is different north of the boarder but I would guess this would still be relevant.
I think your conviction should be spent by now but you should check with the Scottish Licensing authority.