The Thule SKU is 9585B. I bought them here...
https://www.roofbox.co.uk/scripts/rbvehsel4_tab.php?emulate=roofbar&query=8799&vptype=699661&brand=Thule Edge rail black
I'll post some pics once I've fitted them
T'was me collecting from Sheffield and I did indeed spec 18 way seats. I wasn't aware about the electric steering column adjustment and no one mentioned it to me when I picked the car up. Calling them now!!