Hi all, I am just about to purchase a phantom three standard and would appreciate any feedback on the ' Follow Me' mode – cheers

Welcome to the forum, enjoy your time well spent here.
If you're planning on using an iOS device, You will need an iPad with Cellular, to get the built in GPS, for that Follow Me function to operate.
There are other options but that's the most trouble free method, so far.

RedHotPoker

https://youtu.be/29eUbomF-_w my 2nd follow me the drone started to take off had to switch mode quick and recovered it fine.