I meant to update this
So the email was from somebody at Open Reach
We only found out this when the customer and I started a new call to move the master socket with Sky who then booked a visit with OR
And later the original OR person emailed the customer with an apology for the slow response...
Needs to be investigated properly before making any decisions.
Could be 3 loose connections anywhere on the ring - so a simple split may be hard to achieve
I guess your best next step is get a clearer picture to see if the breaker has been changed and if it has ask for the EICR to be updated
Lack of continuity is a C2
How tall is the bathroom ceiling / light. If it’s over 2.25 m then the ip rating is incorrect so it’s not a C2
A 10A mcb on 2.5 is not a C2
Could you post a photo of the CU?
What do these switches and sockets control? I think that is the most important question, before drawing any conclusions.
A bit unusual to say the least but may only merit a comment.