The TKTS booth in Leiceister Square is a great place to get discounted theatre tickets. But make sure you get there early!!
Free Tours by Foot has some tips on how to get discount theatre tickets in NYC
Time Out London's guide to getting discount theatre tickets. Last minute and cheap theatre tickets for West End, off-West End and Fringe shows.
Locations & Hours | TKTS Discount Broadway Ticket Booths | Theatre Development Fund – TDF
Can never find this site or remember it when I need to find some cheap event tickets - So I'm pinning it!
List of available ways to find discounted, cheap, or budget theatre tickets to big Broadway shows.
The TKTS booth in Leicester Square offers London theatre tickets to West End shows seven days a week with many at amazing discounts.
TDF logo; Theatre Development Fund, Advancing Live Theatre and Dance
Saving Money on Broadway Show Tickets, discount theatre tickets
Cheap and last minute theatre tickets in London - Time Out London