Newfound Glory - you are kind of correct. To get your night rating you need to do 3 hours of dual flight training at night, and 2 hours of solo flying including a nav/cross country flight.
Solcal - not correct. The CAA charge £87 for the night rating as a seperate service. I applied for both licenses at once and certainly did not receive any saving as a result. The PPL cost me £181, so all in all they stung me for £268. Gutted.