I have discovered that, not only are my old rubber mats missing the driver's mat (no idea where it has gone) but also, the 2019 cars have a slightly different clip arrangement.

So I need a set of 2019 rubber floor mats.

Try here;

https://www.ebay.co.uk/itm/GENUINE-RANGE-R...%7Ciid%3A1 "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.