I will put that last photo I put on the other discussion on here as well, let's see if any suggestions are forthcoming on how to add an EVSE circuit to this consumer unit that is not particularly old and is in excellent condition.

No one is planning to install an EVSE circuit to it, but it is a good design project for this forum. 

So can a EVSE circuit be added to this consumer unit or os it more appropriate to install an additional consumer unit for the EVSE?

I will give you a hint 

https://m2electrical.co.uk/products/40-a-1-mod-dp-compact-rcbo-6ka-b-curve-30ma-type-a/

but what do you do with it and how, also what else is required?

I think that there are already too many final circuits running through single R.C.D.s if I can see the image clearly enough.

Z.

I think that there are already too many final circuits running through single R.C.D.s if I can see the image clearly enough.

Z.