Try this one - Zagat quotes attached - very reliable and well worth a visit too... rates 23 for food and 21 for service...

Racine
Knightsbridge
239 Brompton Rd. (South Kensington) London, SW3 020-7584 4477

“Trendy and old-fashioned at the same time”, this “divine” “find” in Knightsbridge “feels like France and tastes like France”; “diners are packed in a convivial fashion” for Henry Harris’ “refreshingly different”, “high-end bistro fare” that delivers “a lot of punch for the pound” (including early-bird specials), plus “charming staff” make “you feel you’re getting special attention” without “being over-catered to” – in sum, it’s a “winner” that “matches expectations.”