I did an EICR and as I was doing the RCD trip times the circuits tripped as they should but then as I turned it back on the upstairs lighting stayed off (the breaker for the circuit is on) there is power coming out the circuit but none of the upstairs lights will switch back on. If anyone has any ideas to what it could be that would be amazing, the only thing I can think is that there has been an added breaker in the loft by people who have done the bathrooms.