Hi thanks for all the replies seems most would have done the job.
I've never been asked this before so it did throw me a bit but I'm happy with the decision 'gut feeling' as Gold said once you can sense "attitude." well.......
However I did reflect on it from several different perspectives.
1) Maybe the bloke is right about turning down even a little bit of work, and that's why he lives in a house like that and I don't!!!
2) I do the windows get in with the old windie, he's grateful as hell not to take any more risks. I do loads of others for him, he passes me on all his work when he retires for free 'cos I'm such a great bloke!!!
3) He's a grumpy old Yorkshire knuckle dragging git and he sees me muscling in on his work even though I was asked, he lets down my tyres, breaks my pole and threatens to hammer me!!!
4) I do the few windows nothing comes out if it whatsoever, the old windie retires, sells the business to some one with a pole and I'm out on my ear!!!
Plus the other hundred and one ways it could work out.
p.s. 8weekly don't know what you mean about blowing the old guy out I didn't try to get the job off him!