The Lion King is playing at the Lyceum Theatre in London's West End, booking until 25 Jul 2027. The cheapest way in is an offer (“Magical Monday”, £29.50) on the official website. Tickets go on sale on Mondays at 12:00 (UK time).
£29.50 tickets for that week's performances go on sale at noon every Monday on Disney's ticketing site. You need a MyDisney account, and the limit is two per performance, subject to availability.
Not at the moment, but it offers an offer (“Magical Monday”, £29.50) on the official website.
The cheapest scheme we know of is an offer (“Magical Monday”, £29.50) on the official website. Places are limited, so it's worth entering every time.