Qualified Dog Trainer Needed

Can anybody recommend a qualified Dog trainer for a 13 month old medium sized male dog. Mummy and Daddy (me and the other half) need some advice to help with dog pulling whilst he is on the lead.

Have tried various leads, (currently using a halti type, but allegedly less harsh), and we would love to get him on a big boys lead, especially with the warmer weather coming, as he seems to be struggling in the heat already with the strap round his nose.

He is mainly very well behaved and receptive to most of our commands, but we are just having a problem with the lead walking business, particularly when he sees a potential playmate. Would be grateful for any recommendations.

I would think the Vets would be able to recommend somebody to help you.