Can I please urge all aspiring City trainees to read those articles. There was also a particularly eye-opening article in The Times a little while back, although that's probably behind a paywall.
I don't intend to dissuade people from pursuing a legal career in the City: it can be brilliant and hugely rewarding (in all senses of the word). But please go into it with your eyes open. The hours and pressure are brutal. Many of you will, understandably, say that you're used to working incredibly hard through your time at University and the pressure to succeed can be immense. That doesn't, however, come close to the unrelenting demands of you in these roles. Law firms aren't throwing around six figure salaries to young graduates for no reason: they expect their pound of flesh.
I've posted about this on other threads, and don't intend to repeat myself here unless that would be helpful. The key difference in my mind, between Uni pressures and this working environment, is the utter lack of control you have over your workload and own time. The stories of cancelled holidays, all-nighters, abandoned evening and weekend plans, substance dependence and mental health issues are not urban myths. If you accept the premise that these firms will "own" you, and your time, in exchange for a substantial salary then go for it: but you need to recognise that this is the deal you're striking.