Pinewood, it was made by tyreshop. They sell "fully adaptable" pirate sensors. Cost is about 60% of original/dealer sensors. Because of BREXIT, I suggest you buy/install sensors ASAP before further increase in cost - £ is down 10%
I am a bit worried about battery life of sensors, but since sensors only activated during wheelrotation, I hope that all sensors will live "my" maximum life of 8 years with the vehicle. I will, probably, keep sensors when new summertyres - Michelin Pilot Super Sport non-RFT:s. 20" staggered.