That's right. :-/unless your board was installed prior to april 2009, there isnt enough information on that link for you to know if you have a faulty MCB or not
It is pretty straightforward as I have explained. A picture will offer nothing new as I have now given all the information on the board.A pic would be useful....these boards can be configured in a myriad of different ways, a generic pic of the internet wont show us how yours has been set up
The main switch (RCD) followed by three MCBs (for the house lights and yes one socket) followed by another RCD, a yellow tester button governing 9 MCBs for the remaining house sockets. Not much else to it.
However, I think at this point the only way forward is specific testing with equipment.
Thanks all.