The Cathedral does two Late nights a year, where you can pay a reduced priced to visit after 6pm. Even sweeter, it's the only time you're actually allowed to take photos in St Paul's. So it goes without saying that it was super busy, and full of photographers.
St Paul's has been on my London list since I got here - I'd been there before but couldn't remember it, and it is really expensive to enter so I jumped at this chance! It really was beautiful!