TKTS Booth
The TKTS booth is situated bang slap in the middle of Leicester Square, right in the middle of London’s theatre-land. Run by SOLT (The Society of London Theatre), it sells on-the-day discounted tickets for musicals and plays currently running in the West End.
It is possible to check online at www.tkts.co.uk for their current availability and show allocations, but the best way to use TKTS is to go in person to the booth. You are able to purchase tickets up to an hour before the performance, although that is cutting it a bit fine. Be prepared to queue for a while on the weekends and have a list of alternative shows, just in case your first choice is unavailable.