20 years ago I worked on the Grays Inn Road, and the name Quality Chop House is very familiar. However, I can remember nothing about it (I refer you to the turn the new kit thread has taken).
I can highly recommend the Chicago Chop House, in, err, Chicago. A carnivore's dream, very high quality meat, with prices to match. The Kobe beef steak is superb, and not an intimidating size, you can eat the whole thing and enjoy it. Not, of course, real Kobe beef though. Above all the service is truly outstanding, our waiter a proper grown up bloke who really knew his stuff, and judged tables instantly on their desire to have a laugh or be left alone, was brilliant. Even our American friends, who are used to high standards of service especially in high end restaurants, judged him the best ever. We reckoned he may have been making $1,500 - $2,000 a night in tips.
On Kobe beef (and there is no way that this can't sound poncey) I've had it in Kobe (it's where my company has its offices in Japan) and it is an experience to treasure. The meal is like a ceremony, the chef prepares everything in front of you, multiple courses starting with lobster and building through different grades of beef (all superb) to the Kobe, and all intended to demonstrate that it really is in a class of its own. It literally melts in your mouth. I'm off there again in August, but, naturally I can't remember the name or location of the restaurant. But seeing as it would require a new mortgage to eat there (fortunately the company paid last time, and we had someone senior enough with us to break all the expenses limits, and even then I think he topped up out of his own pocket. He can definitely afford it though), I doubt I would return, just keep this as a unique experience.
We were probably working on Gray's Inn Road at the same time. I was working for Reuters, who had a couple of floors in the ITN building at number 200. The Quality Chop House dates back to the 19th century and is on Farringdon Road with its own butchers next door.