Would there be any chance of information about the football team?

I have this photo but no knowledge of the event it commemorates. My grandfather and great grandfather are both in the photo which must have been taken prior to August 1911 when he married and moved to Dartford aged 21.
Thank you for all your hard work.
Regards Linda
Update from Linda - 21/7/08
My grandfather is holding the cup, he was Albert Charles Tadman. His father George is second from the left in the first standing row, he has a moustache and a role neck sweater. The very tall man at the back appears in many old photos that we inherited from my grandmother but we have no idea who he is.