Hi sorry for multiple posting today.
Just had dog out on a rural(y) walk, let him off leash, all good. We go through some gates to continue walk on path adjecent to farmers field, getting dusky now.
We walk up and i go to put him back on leash as getting near road, and bloody thing runs off.
Stay positive, call him back, he comes close aI take hold of his coller....he slips it 
call him back again, he comes over, go to put coller back on, he runs off....Keep doing this.....for obver half an hour!
By now its pitch black, no street lamps as in field (!) dog thinks this is great fun, I dont. Start panicing now, its dark near road, so walk away, he follows but wont get close and if i go after him he bolts. I cant go either way as roads all round, busy ons, its dark, dogs black.
By now I'm almost crying, in ballet shoes that keep falling off, feet covered in mud, still no dog.
Tractor comes from next fileld, call dog franticly, f*cking thing darts in front of tractor!
20 minutes later I finally get dog on leash, and get out of field. H trotts home like he's the happiest dog in the world, comes home and runs around mad barking, jumping and generally being a pain in the arse.
I can't even look at him. I will never let him off again, never been so bloody scared!