OP
jimfuego
If you say that there is a supply leaving the MCB but nothing at the lights, then its really gota be at the first on the circuit, or the cable run from CU up to first point!!
again good luck..
PS dont leave us all hanging when you do find the fault, theres nothing worce than reading all the advice then never hearing what the out come is..
thanks Edd - i'm hoping it doesn't take long to identify