ohhh thats not the injector pipe, thats the banjo bolt that holds the diesel leak off pipe on. if you can extract the bit that is showing by getting pliers or mole grips around it, then all is good and you can just replace that banjo bolt, if you cant, then it is looking like a new injector :/
Right, new banjo is in, and new injector pipe should arrive today. But as mentioned earlier in this post about the return pipes, i've also noticed one of them has a small hole in it also.
Question is, do i need a whole new rail? or can i bodge that hole shut?