I'm sure to make a mistake or two here, but let's see if I can put names to faces...

Starting at the left, we have:

• Christina 
• Tony 
• Ashley (Tony's daughter)
• Danny (obscured at the back)
• John (the Dad)
• Matt (also partly obscured)
• Ben (in profile at the front)
• Nikki
• Dave
• Sandy (Dave's wife)
• Michael (that's me)
• Jan (Mum, with ring-in baby Gus - the son of Brendan Smith who took the photo)
• Zachary
• Steve

For anyone unfamiliar with the way this all came about, John and Jan had kids in this order, starting with me in 1965: Michael, Tony, Steven, David, Nikki, Chrissy, Danny, Matt/Ben (twins) and Zac.

Feel free to let me know of any glaring errors or omissions.