By Lucy Kenningham London Tide at the Lyttelton Theatre: ★★★★ “Every writer of fiction, though he may not adopt the dramatic form, writes in effect for the stage,” Charles Dickens announced in 1858. In the case of his particular style of fiction – lengthy, originally serialised novels crammed with characters and complex plots – this is especially fitting. But is it fitting to lob in avant garde blues punk? Well, yes, although Dickens would surely be a little aghast at this new adaptation of his last and least popular novel, Our Mutual Friend. It introduces the disquieting music of PJ Harvey to…