Thanks for the clarification, I think I should contact the CAA directly to confirm the night flight aspect. As mm_flynn stated there's no "night rating" in an FAA lisence, you have to do 3 hours of night training as part of the certification, this is optional in a JAA PPL. What this means is I don't have an endorsement on my certification that states I am able to fly at night (as all FAA certificates allow the pilot to do this unless endorsed otherwise), something a JAA PPL holder would have. This means I am only able to fly day-VFR in a G registered aircraft as I understand it.
This discussion is for another topic however, what I really need is an aircraft to fly - even if only daytime!