(DIY) Extending the ring up the wall (insulation?)

[Pete999]

Sounds like the OP is extending the ring. (RFC )

Agree but does the OP really understand what extending a RFC entails? hence my question, is he spurring or actually extending the ring, to a DIYer that could be taken either way.

 

[Squid]

The OP did say that he is extending the ring and running in two cables so I would "assume" he does understand the concept of how a ring circuit works.

 

[Pete999]

The OP did say that he is extending the ring and running in two cables so I would "assume" he does understand the concept of how a ring circuit works.

A possibility I suppose.

 

[Andy78]

RCD Protection: Yes, all good.
For the earthing and bonding, I checked continuity between the ring's earth and the copper pipes you see in the picture, there was continuity with a very low resistance reading (0.00 to 0.01 on my multimeter) which is what I was expecting so I delved no further - if there are more tests I should and can do please advise.

Earth fault loop impedance tests, both external and for the circuit, Prospective fault current test, insulation resistance tests, RCD tripping times tests etc..... all the stuff that should be done to ensure safety and compliance with the wiring regulations.