I was wondering whether the attached photograph of a football team might be of interest to you. My grandfather William (Bill) Weekes is the third from the right in the back row. I know he played for Rainham in the New Brompton League at one time. I assume  this is a photograph of the Rainham team, although it is possible he may have also played for another team at one stage. I don't know the date of the photograph, but judging by how old my grandfather looks I would guess that it would be around 1920. 

 
Photo of Rainham Football Club 1920 1924 William (Bill) Weekes
Regards,
 
Kevin
 
The scan below of a postcard dated 21 March 1924 addressed to a Mr R Cassidy at 101 Victoria Street Gillingham which mentions Rainham Football Club to play a football match at Hempstead, team to meet at the Ash Tree, Gillingham was kindly provided by Peter Manning.
 
The card reads:
 
Dear Sir
Re match with Hempstead on Sat. All players will meet at the Ash Tree Gillingham about 2.15pm. Kick off 3.30pm
Yours etc
 
Rainham FC RCFC 1924 match postcard