All tails have now been changed for respective colours any how,Afraid to say that all is definiteley NOT well. Blue is solely to be used as a neutral conductor in BS7671 and shall not be used as a phase conductor. I am guessing you have also used blue as your neutral aswell to add confusion to the situation. Why not save some more money and use earth for them all ????? Had you used black,brown , or grey phase conductors then sleeved them up then that would have been fine under the regs as they are all phase colours. This will fail any future inspection due to the above reason. Using the wholsalers lack of stock is not really any sort of argument as every wholesaler worth his slat can order cut cable in within 48 hours .Not trying to have a pop at you but i just hate it when qualified sparks seem to think they can just install anything and make do .
Nick
As the wholesaler admitted he shouldn't have gave the app 45mtrs of blue but as i need that amount ASAP due to the old switchgear and board coming out over the weekend he,s replaced the lot at no cost,
All i've got to do is the return the used blue tails back to them.
But if i would of had to pay for them they would have been left in and not lost any sleep over it.