Many thanks for the quick response from one Black Rat to another !! It was general advice I wanted nothing legal. My old colleague hasn't yet got a job after ill health retirement due to arthritias but went down the job centre to sign on and to get her stamp paid !
Someone said to me a while ago that the job look at your tax code intermitantly to see if you are working and what you are doing. I know a few years ago some Essex officers who retired with bad backs were recalled after being found to be working for a landscape gardening frim - bit extreme but I didn't want my old colleague to fall foul of this.
Thanks for the good advice