Pat and Margaret (Radio 4, 3.15pm) is a radio remake of Victoria Wood's bittersweet comedy about two sisters reunited after 27 years on a live television show. One is a toxic Hollywood star; the other works as a waitress in motorway service station. Sarah Lancashire and Imelda Staunton give knock-out performances here, but it's maybe not one to listen to with your siblings unless you all really get on.