How to get tickets for the 2019 Last Night of the Proms

Prom season is starting again and it’s already time to dust off the envelope and postage stamp in order to apply for tickets to attend the Last Night of the Proms.
If you buy a Whole Season Ticket, then that gets you automatic entry into the Last Night celebrations.
Due to the intense popularity of the evening, the rest of the tickets are allocated in two separate ballots.
The largest ballot is reserved for people who attend the Proms – which is perfectly understandable – and i