Udderbelly is back, and this year it's bigger than ever. With a mammoth 15-week run, get ready for an extravaganza of music, comedy and all manner of entertainment, all inside the festival's iconic, upside-down purple cow on the South Bank. Critically acclaimed sketch groups Massive Dad, Lazy Susan and Birthday Girls are joining forces for one night only. Between them, they've received over 250 review stars from any publication you care to name, appeared on everything from Channel 4 to Comedy Central, and are excellent, kind, tender people. Featuring sketches, mash-ups, mash-up sketches and other combinations of those words, come watch these three comedy behemoths dominate the South Bank. Unmissable, unless you can't make it. In which case, fair enough. But we'd strongly advise cancelling plans. Suitable for over 16s. Valid ID required for ticket collection. Ticket sales are final and bookings cannot be amended, exchanged or refunded (unless of course the performance is cancelled). All listed offers are subject to availability and can be withdrawn at any time.