This is a big, big loss to London cycle campaigning.
As coordinator of Southwark Cyclists he led dozens of free open-access rides which started from the Southwark Needle at the southern end of London Bridge.
He also coordinated popular large-scale rides around the deserted streets of London on Christmas Day and overnight on the shortest night of the year.
His organisational skills were also applied to the annual Dunwich Dynamo night-time ride between East London and the Suffolk Coast. Each year Barry would arrange a fleet of coaches and vans to bring riders and their bikes back to London in the morning.
He also helped to forge strong links between Southwark Cyclists and Southwark Living Streets, the pedestrian-focused campaign group, so that the two organisations presented a common front on many issues affecting walkers and cyclists in the borough.