Thank you all for your good advice, sorry for the delay in responding to those that have replied, my internet has been down since posting.
Was just having a down day with it all when I posted, happier days now !! Have managed to get her to come outside with me now by being positive as I go out the door stating "lets go wees then" and walking to a patch she seems to favour and through using "go wees" and major major fuss when she does followed by some biccies - we seem to be getting the hang of coming outside for a wee. Have just been concentrating on the wees first - she still isnt keen to do her "other"!!
In answer to a couple of the questions, she does wait until we arent around and then goes, my partner is at home with her all day while I am at work and takes her out and leaves the door open for her to go in and out - however he comes to pick me up from my bus and within the half hour he is gone she does several toilets of both - is this a separation problem?
I previously rescued an exbreeding bitch and we rarely had any problem, she was as good as gold. Still missing her terribly, but certainly will not give up on this little scamp !! Even if she is a headcase !