If the dog has plenty of exercise and its just in there whilst you're at work or when people are out, that should be fine mate, i kept my springer in a kennel and run, 4x4 sleep box and 6x4 run, but have now changed it to having 2 sleep boxes 4x4 and a 10x10 run, for both my springer and lurcher and they live out all year round mate........
What area are you in, you can often get them cheap in some of the local Ad papers or someone local will prob make you one, they're easy to make mate..........
ETA.... just seen you're in Newcastle...........