Thank you so much everyone, massively appreciate all the great advice.
Lovely pic Penny B, v sweet and they all look so well behaved!
Wendy, we had the same thing with the Halti-lots of pawing at his nose and trying to rub it off by dragging his head along the floor. Not good in any way!
Emma, I completely agree with you in that we felt that, while the Halti helped, it was kind of just masking the problem-he still wanted to bounce along like a cockerroo!
But the good news is that my husband has put in lots of training this afternoon and it seems like the penny has dropped (for today at least!) and they had a really positive, happy lead-training session. Fingers crossed.
Incidentally, we've made a new cocker friend whose worker (aged eight) is apparently so bad a puller that they've bought a car to drive him to walks rather than walk him there! So it could be worse, right?!
Kx