I think that, strictly, no certification is required, but it seems to lie somewhere between an MWC and an EICR.
Cooker circuit wouldn't stop tripping. It also served a couple of sockets as well as the cooker hood.
L-N short discovered in a section of cable, which supplied a socket and which was isolated. (Buried beneath kitchen tiles (no capping) and difficult to see what could have damaged it; portion beneath the floorboards was undamaged.)
Dead and live tests all satisfactory, cooker working again, job done. ?
Having done all the tests, it seems to be a pity not to record them formally. What do you think?