. Any advice on getting her to do her business when out walking? I've tried taking the treats with me but she is just so fascinated with the "outside world"! 
i havnt any advice for this but biba also did this when she was first allowed out in the big world and i think she was so used to going in the garden that she didnt realise she could also do it in the big world ,she used to save it until we got home

but she did eventually realise she was allowed to poo outside the garden,
but i think you have answered your own question,who wants to stop and poo when theres so much more interesting things to do,like eat any old c**p off the floor,wag your tail maddly at every one you see,chase anything that moves ,you get the picture

and yes i am up a 4.06 in the morning cause my bl***y daughter hasnt rang or text me to let me know where she is,and now i cant sleep for worrying

,its so much easier having dogs