On Mon, 23 Jun 2014 22:49:01 +0100, Alaric wrote:

What should I do to stop this rust coming through the new white gloss
paint I intend to apply.

Either replace the whole lot and use stainless or brass screws when
refixing or replace the rusty rubbish with stainless/brass.

I don't use anything but brass or stainless outside. Anything iron
based just doesn't last unless hot dip galvanised and even then there
is good HDG or bad...

--
Cheers
Dave.