Well done Rob, so proud and glad you broke the Catford CC club record, which has stood since 1952 by George Laws of 463 miles 508 yards, especially after being so close a few years ago.
Plus doing it on Fixed my hero, and as many have said what looks like a record distance on fixed.
So glad I was there to witness it and play a part, "Chapeau & congratulations"
I graphed the top 8 riders of men's race for this year and posted on FB; shared below
You can see how consistent you need to be at the pointy end. I planned for a drop off in the second half and my splits were 255:229. This was OK, but I suspect I could do better.
It will be a fair old while until I can think about doing this again.