BOAC
Did I mention CAT II?
Are you posting from the pub?
This was a CAT 1 aircraft, making a CAT 1 approach.
He needed 550m or better.
All the RVRs on the METAR are worse than that.
Further, they made 3 approaches so they'd need 550 or better 3 times during that period.
Thats all.
I see a lot of lower case 'n' attached to the RVR. Thats 'not changing' to save you looking it up.