To get cheap theatre tickets in London, consider these proven strategies:

• Book tickets online in advance to secure discounted prices and the best seats, as many theatres offer online deals.

• Visit the TKTS booth in Leicester Square on the day of the performance for last-minute discounted tickets.

• Check for theatre lotteries or rush ticket schemes at venues like the National Theatre's Friday Rush or Royal Court Theatre's Monday releases.

• Buy standing tickets or "groundling" tickets at Shakespeare's Globe for as low as £5.

• Look into group discounts or fringe theatres, which typically have cheaper prices.

• Use student or young person discount schemes available at many theatres, offering tickets for under £10 or £15.

• Join membership or seat-filling schemes like Central Tickets or Audience Club, which offer very cheap tickets for frequent theatre-goers.

• Arrive at the box office on the day or call to inquire about returned or unsold tickets, sometimes sold very cheaply.

Following these tips can help you enjoy London's West End and other theatre experiences without spending a lot. Booking in advance online and using TKTS are particularly reliable methods for discounted tickets.