Thanks Mr S .
I will keep an eye on the checkers.
What I will do in the mean time is to install some more sockets in our covered enclosed porch (our porch is an area in the house where the consumer units and electric meter are also our BT landline and my DSL modem ) for the equipment and also first fit some plywood to the area were the CSP and ONT, my 16 port network switch and hardware firewall. (it's easier to screw things to the plywood then drilling and plugging the wall each time
Do we know what size the new ONT and CSP are ?.