Season 11 of this very popular show.
10% Quidco would bring this price down to around £16.20 & if you've not signed up to their newsletter the voucher link below may get you a further £1 off.
They also say they'll send a £1 voucher for your next order when you spend £10 or more.
Find-DVD shows the price as £16.99 but the BangCD site has the price up at £17.99. This is still a very good saving considering the vouchers/Quidco & when the next price up is £32.93 at The Hut/Asda/Lovefilm & Currys!