Having had the door seals frozen on Monday morning a quick search revealed as a RR owner this is a must have.

Duly ordered https://www.amazon.co.uk/dp/B004B8GTQG/ref...E_AMZLdp_1

We haven't had really low temperatures where I live for a couple of years so I didn't have that problem with my DS.

Previous to that no freezing issues with my Saab's but maybe because they had a single seal ?? BMW X3 30e XDrive M Sport
GoneBMW 330e
Gone MY2016 RR Vogue Fuji White SDV8 with a few extras...
Gone MY2016 Discovery Sport HSE