Thank you so much for replying everyone!
I had forgotten the website's url so excuse my late response. It is a relief to see so many people can relate! I feel as if I am not alone in this. I do think fear as a lot to do with it, as well as over thinking. I tend to think negatively before I even start to drive which adds a lot of pressure to myself. I constantly repeat and think, "what if I crash, what if I hurt someone, what if I get stuck".. instead of thinking, "I will be cautious, I will enjoy this etc etc".

I drove some more yesterday and I have improved a lot, even in parking!
I know I can drive and I've learned when you let your fear get in the way you can loose knowledge even of something you're capable of doing.

I wish you all safety,health and luck in any decisions and over coming fears