Thank you Leanne for your quick reply,
The link you provided certainly looks similar to the uniform in my photograph. I too had thought it may have been airforce.
I had forgot to mention the photograph was taken in Sydney, NSW Australia hence the reason I believe this is ADF.
Would you know if the Airforce uniforms at that time were different between states at all and if it is able to find out if this was a New South Wales or South Australian or other state uniform? The reason I say this is that the marriage took place in New South Wales but the bride had family from South Australia?
Rebecca