Thanks for that. The numbers you mentioned came up in searches I ran, but I'm really trying to find the legal/CAA reference.
Needless to say the minima you will actually want to apply will depend on your currency.
Your own personal minima will be in excess of the published ones.
I understand this too but it would be nice to know where the base figures are published so that you could at least have an absolute minima to begin with, eg 200' ILS plus 500' plus 50' = 750'/1800m.
I set my own minima based on the type I fly rather than work hard and fast on weather limits alone. Although none public transport IR does not have the same restriction, you'd be on very shaky ground if something happened and the limits were below the public transport figures.