Thanks for all your nice comments, Im sure you all realise I have not made this decision lightly.
Yeah it has only been a week but I am sensible enough to see this will not work, why prolong it and let Tim get even more attached. I hoped I could help this little guy because he is great but we are just not the right household for him. Im sure now Tim will find a suitable home where the owners are right for him,because the centre will know more about him now, im going to write a full profile of everything iv have learnt about him this week, so im sure that will help. It would be selfish of me to try to keep him.

'spot' I have certainly not given up on/or slated rescue dogs. I met lots of great dogs at the centre and would take them all if I had a massive house and no job to go to! I really am passionate about helping Staffords I love them dearly, even if I cant directly help by rehoming I will try to help in other ways .