Mark the Southend Club in the first Photo is Thorpe Hall which I believe was Sir Michael Bonnlack's home club.
http://www.thorpehallgc.co.uk/clubhouse_2/history/Belfairs is the Course Colt listed in his adverts as Southend. I've posted pictures before and the bit we can see is the older 9, the holes in the trees can't have been open long as it took them several years to dynamite them into being.
The Luftwaffe also photographed there in 1939. (interesting re the comments on the Thorpe Hall Site)
The holes we can see in your image are today's 7, 10, 11 5 and 4. Unfortunately my pictures of the course are not numbered and I'll try and get more time to look at them but i' surprised how many of the features on your photo appear to still exist in some form.
Can someone plesae tell me exactly how to find these on the website, I'd like to feed back to the local historian who helped me?