UK Engine Block heater

Have had masses of trouble trying to get an EBH in the UK. Finally managed to get one from Germany (DEFA). It is not the same design (and a lot more expensive) than the North America ones. This one is a plate that is held tight against the back of the enfine just below the exhaust manifold.

Couple of questions, has anybody come across this one? and also it did not come with a cable so I am having to make my own up, how do people mount a connector in the front of the car.

I know it does not get that cold in the UK (Freezing for a month or two) but I am finding FE very interesting, and would like to get the best out of the car, or should say great car.

Thanks