Think diesel and petrol have the same signs!
Tankers have a red diamond shape to the right of the orange sign, with a black image of a flame at the top, and a number at the bottom, i.e. 3, the numbers and letters to the left signify what the tanker is carrying, and how to extinguish flames if it caught fire, e.g. coarse spray, fine spray, foam, or a dry agent, this is for the Fire Brigade.
There is also a null Hazchem sign which indicates if a tanker is carrying non hazardous substances.
If there's also a shortage in Europe then they'd be off their heads to help us out after the way they've been treated.
Forget how some European governments may feel toward U.K. after Brexit.
If I was driving a tanker in Poland for $2000 per month, it would need a humongous hike in pay to encourage me to jump through hoops with all the paperwork involved, and come to this P hole where I couldn’t speak the language, then live in digs just to keep the Brits cars running.