I am sure that the £750 contribution is only if you are buying a GTI,there is no contribution on an R.
The £750 PCP contribution applies to the R too. It's in the small print at the bottom of the webpage.
Are you sure? When you go to the overview page for GTI/GTD/R and specifically into finance within overview, there's a table with all 3 cars, with each row highlighting a different component of the overall finance cost, and in the deposit contribution row, only the GTI's column has £750 within it, the GTD and R columns are blank for that row.
My apologies, you are right AndyG and MH, the R is excluded. I must be losing it

I've spent the last few days at work projecting costs for the next 17 years for all the sites in my service (lots), adding up seemingly endless figures (correctly, lol) and it's finally got to me!! Number and word blindness. I'm going to lie down in a darkened room now

Upside is it means the DTD discount is full 12% on the R.