Hi All,
Firstly, thank you for all the support for each and every one of you, it is greatly appreciated. I have checked DJ’s video out and I can confirm that this is not the same issue and I think I ruled out the camera. I went into DaVinci Resolve and did some editing, as it was a DLOG file and this restored the colour etc. I have since then changed from DLOG to normal mode and the video footage is clear with colour, similar to the quality of images which is reassuring. I have yet to use the Fly app editor but will definitely test this out on my next flight, when the weather decides to play nice 
Thank you all again for your help, the level of support has been great and I have felt welcomed into this great community!