It was mentioned on one if the websites prior to the new EE price plans that customers who took EE home broadband would receive 10GB free data on their 4G mobile contract. I can't seem to see any mention of this on the EE website? Dies it exist ?

I thought it was

GET A PAY AS YOU GO PHONE AND WE'LL THROW IN 10GB FREE DATA AND 2014 FREE MINUTES.

http://ee.co.uk/

and click on the '4GEE on pay as you go' tab

I think you misread my post. I am talking about a permanent extra allowance of 10gb free 4G data on your mobile account if you also have EE home landline broadband