but not in day mode.
you cant get a graded shunt lock afaik, but you dont need one as there is no en for shunt locks so its old regs.
We must bear in mind that the uk is different to europe in what we do. ie grade 2x which is uk only, which will change to 2f (i think on the new table 10) to add it to en not making it a 6662 thing. Same with the grade 1t that has been added into the new proposed table 10.