In this photo Charlie Watson is identified seated third from the left.
In this photo Charlie Watson is identified sitting first on the left.
Other photos which seem to feature photos of this man are:
The man on the left.
The stretcher bearer on the right.
As Charlie always seems to have a smile on his face, that might be him second from the left.
And for the same reason, the smiling face in the back row on the left may be Charlie.
Possibly Charles Watson again in a winter fur.
Any comments on these identifications is welcome.