This will be moved to the
Club Area page
In the absence of concrete records from the past that we accept may well have been faster (with the caveat about course measurement not always being up to modern standards), we are using the following sources of verifiable times.
The club results pages from 2006 to present
Power of 10
Reliable results sources such as
London Marathon Historical Times
You wonder what prompted the check, 23 metres seems too little to have been picked up by a statistical analysis of the times and number of PBs and there is no way that Garmins could have raised any realistic suspicions.