Hi, I am amazed that as these fantastic cars are used as Taxi's I am unable to locate a SOT lead for my 2003 L & K Estate to fit my parrot hands free kit. Can anyone help here? Reg

Ebay, pretty sure even Halfrauds sell them.

Do they not come with Iso plugs on as standard?

 OEM headunit is ISO.

Exactly my point,most parrots I've ever seen have had iso connectors and the sot lead adapts iso to something different and as the octavia in question is a 2003 model then it will have iso leads so the parrot should just plug in unless they have changed newer ones?

I was assuming that the OP had an aftermarket headunit fitted.