We all came away very happy with our experience at Nando's on Gloucester Road. For an adult, I'd recommend the half chicken with two sides, as shown in the photo. Be aware that although they're known for their fine selection of sauces, they're all pretty spicy. If you can take the heat, give the mango lime a try and you'll be satisfied.
Most of all for us, we found the abundant space (especially on the top floor), unlimited ice water (and unlimited frozen yogurt, too!) and friendly service a most welcome refuge from the packed streets of London.