Cured.....Turned out to be the thermocouple wasnt near enough to the pilot to maintain temperature, Some adjustment to the pilot shield and system is now working fine .
Thanks for all the advise.
I had to drain the c/heating system to change a rad valve but when completed and boiler switched on, it fired up but was noisy. After a couple of bangs and creaks the boiler shut down. Also the pilot wont stay lit.
I'm assuming it could be the overheat shut off thermostat as a new...
Just tested the black with brown sleeve at light switch and its def an earth.
Ive been in this flat 10 yrs and never had any electrical problems but this does seem a strange wiring circuit maybe its time for a rewire......
Another twin core cable red going to switch black with brown sleeve going to earth terminal which I assume is going to another a light fitting in the next bedroom
Untill I can get my tester on it I cant be sure its an earth but it is connected to an earth terminal,Also this wire traces back to an earth terminal on the light switch wall box...
Strange....
The Red is def live from the light switch
I recently replaced a ceiling rose in the bedroom of my flat and found the wiring to be quite odd..
1 single black wire sheathed in grey
1 single black wire sheathed in grey
1 twin cable black/red sheathed in grey (black wire has brown sleeve on it )
This was wired both single black...