OFFER EXPIRED She Stoops to Conquer: Get best available tickets for £20

Katherine Kelly plays Kate Hardcastle, with Steve Pemberton and Sophie Thompson as her parents, in what is thought to be one of the great comedies of the English language. Hardcastle looks forward to acquainting his daughter with Marlow with a view to marriage. But thanks to Lumpkin, he's mistaken by his prospective son in-law for an innkeeper, his daughter for the local barmaid. The good news is, while Marlow can barely speak to a woman of quality, he's a charmer with those of a different stamp. And so, misdemeanours multiply, love blossoms, mayhem ensues. Extra members can buy the best available tickets for £20 (usually up to £29.50) for preview performances from 24 to 30 January. Take up this offer Click here to take up this offer Help with offers and events •Extra is free to join. You need to be a member of Extra in order to see the redemption pages. To register your email address for the first time, press on the 'Click here to take up this offer' link above. • Members also need to sign in to guardian.co.uk at the top left of the screen to be able to take up offers, book tickets or enter competitions.