As you can see, there is no earth or MEN link in the consumer unit. I looked at he mains supply in the street and i cannot see any earth connections, so it looks like i need to add a local earth rod. However, how can i confrm that the mains supply does not have an earth bond?

If you have not already, check the supply poles, there "should' be an earth rod from the neutral (usually the top wire) every 3rd pole or so.

 

If you don't see this it's safest to assume that your supply is not MEN and proceed accordingly.

 

With no MEN you just need to bash in a 2m or so earth rod and connect it to the (rather empty) ground bar in your CU.

 

Do NOT link that earth bar to the neutral. This will make your system TT which is perfectly safe since you have an incoming RCBO.

 

Take the earths from there to your equipment that needs an earth / 3-pin outlets.

 

10 minutes ago, Crossy said:

If you don't see this it's safest to assume that your supply is not MEN and proceed accordingly.

Thanks. I checked the poles in the road and i could not see any earth connections. I will add a local earth rod.