Thanks for the replies guys!
Firstly - I was unclear - these are front tyres.
Thanks so much for the rear tyre article - if it happens on the back I will know why!!
Is there a similar reason for the front?
The track rod ends seem in reasonable condition, no appreciable play. The antiroll bar s at the front need replaced as they are knocking - I doubt that is the issue.
Maybe a symptom of old suspension - it has done 146k? I just replaced the rear shocks as back left was knocking. That made a big difference to ride quality!
Thanks guys, looking forward to your advice again
Mike