This is a nicely nuanced show, extremely well acted, and convincing overall. Rupert Penry-Jones is just perfect as the supercilious, somewhat patronizing "blue blood" barrister who nevertheless admires his plucky "red brick" rival, equally well played by Maxine Peake. I'm not quite sure if any one of the excellent cast steals the show, but Neil Stuke as the clerk of chambers is certainly well in the running.
It's very much of an ensemble production, where the characters are every bit as important as the cases, if not more so. In fact, the cases themselves are not that remarkable, so that it's the personal character traits that drive the series forward. I could have done without the rather ridiculous housebreaker intruding into the proceedings with his absurdly exaggerated fixed grimace, but then that's a minor quibble.
Overall, the setup feels very convincing, and the now clichéd portrayal of the gentlemanly world of barristers has been well toned down to reflect the modern world. Not a masterpiece, but a very refreshing and enjoyable offering. Hopefully there will be more to come.