Although this is a U.S. article, there are plenty of parallels with BigLaw practice in the U.K.

It is a pretty devastating indictment of the world of BigLaw firms.

Certainly in-house practice is one route a dissatisfied BigLaw practitioner can take. I'd recommend heading in the direction of NewLaw firms such as Halebury which is a much more flexible and satisfying way to practice law.