Ok, guys, I'll see what I can do. I said storm clouds but there weren't any storms when I took the photos although we had some rumbles earlier in the afternoon. These were just smaller less developed clouds compared to a fully fledged cumulonimbus. They were also losing their steam because it was getting cooler and the sky eventually cleared out later on.
They weren't the most spectacular clouds I've taken photos of but I got some that came out quite interesting. I'm surprised that somebody asked to see them really because people think I'm a bit strange for appreciating cloud formations haha and don't realise how great they can look when you capture the right moment.

I'll need to upload them to photobucket first.