The nail varnish suggestion worked a treat ...so my faith is still with you lot

so .. front brake is sticking ????... which, being a novice too, makes hill starts at lights ( after braking ) something of a pantomime for the other motorists.

Save taking bike back to a mechanic (yet again) and squirting everything in sight with WD40 (this mornings attempt) any other suggestions ?
If it involves undoing bolts etc please be detailed with instructions !! I'm no mechanic but not (totally) stupid either, and have done re-wiring at home with a bit of guidance !
In your capable hands again

T