Mystery wedding photo unit identification?

[Goodsamaritan]

Hello members, I am looking to identify the unit of two British soldiers from a wedding photo. The identification will help in getting the photograph back into the hands of the relatives of the people in the photograph. The groom is likely part of the Parachute Regiment but the best man is a mystery. He is wearing what seems to me is a GS cap and the cap badge appears to be some sort of Fusiliers badge. His uniform is lighter in color and one of his patches on his arm bears resemblance to possibly the winged pegasus Airborne patch. Can any member please give his thoughts on what units these gentleman are with? Finding this information could help me narrow possible searches for churches. I've tried Essex churches with no success. Any thoughts at all would be appreciated. Thank you!