It's all there to be found, have look at the CAP 413 Supplement
CAP 413 Radiotelephony Supplement 1: A Quick Reference Guide to UK Radiotelephony Phraseology for Commercial Air Transport Pilots | Publications | About the CAA on Page 14 you will find your answer.
There have been some recent changes to the phraseology in this area but the above covers it.
The answer to your query is "Descend on the ILS QNH 1000 Hetopascals G-AB