Try the Outback Steakhouse. It's an Australian themed chain with about 7 or 8 restaurants in the U.K., most being in the southeast but now with 1 in Birmingham. I first sampled the traditional Caesar Salad at an outlet in Florida and it is truly the most amazing caesar anywhere! Their chicken caesar is huge and they use traditional romaine lettuce. As far as I'm aware, their sauce also includes anchovies (although these have been blitzed into the sauce to hide the fact).