Lucy Porter is a lovely woman: smiley, wholesome as a calorie-controlled serving of Kellogg's Special K, and Catholic enough to be a serious contender in a Father Ted Lovely Girl contest.
She is proud of her pert bosoms, less sure about matters downstairs, and troubled by her tendency to comfort dull men she has had to share cabs with after parties. But since her gem of a show is about lies - or, more precisely, the dangers of truth-telling - this may not be reliable.
In any case, no claims are put to the test on her robot lie-detector, which - like the video testimonies from family and friends demolishing her butter-wouldn't-melt persona - seems unnecessary in a show so beautifully written and judged you want it to go on all night.
Elfin Porter is a real discovery: unforced, interesting, surprising. You have got to have talent and not a little cheek to carry off a Mary Tyler Moore innocence while taking gags off into the wild blue yonder - and Porter has bags of both.
· Until August 24. Box office: 0870 7453083.
