The band, who play the same venue on December 11, return on December 18.
© BBC
All previously-announced dates on the group's 'Tour of 2 Halves' of theatre and arena concerts have sold out.
Tickets for the new date go on sale this Monday, October 8 at 10am and are priced at £29.50/£32.50.
Mumford & Sons' second album Babel this week claimed the biggest first-week sales for an album in the US in 2012 so far.
The updated tour dates are as follows:
- November 21 - Princess Theatre, Torquay
- November 22 - Guildhall, Portsmouth
- November 23 - Regent Theatre, Ipswich
- November 25 - Caird Hall, Dundee
- November 26 - The Sands Centre, Carlisle
- November 27 - Venue Cymru, Llandudno
- December 4 - Metro Radio Arena, Newcastle
- December 5 - SECC, Glasgow
- December 7 - LG Arena, Birmingham
- December 10 - Arena, Manchester
- December 11 - O2 Arena, London
- December 13 - CIA, Cardiff
- December 15 - Odyssey Arena, Belfast
- December 16 - The O2, Dublin
- December 11 - O2 Arena, London - NEW DATE
