Well, I can't really say because I don't know anyone that works in one. I think it's a standard increase but then it's reviewed individually. Either way, 10 years in I would expect somewhere close to a 6 figure sum. Apparently solicitors at major city firms get bonuses of £7-10k a year as well, blimey.
However, they don't really have any life to speak of. It isn't a lifestyle for me at least.
Maybe I'm mis-reading what you are saying but if they are starting on £95k a year they are already pretty close to a six figure sum? Remember some guy telling me about his lawyer mate and how he was on around £200k a year and I think he worked in the City. So I've always thought they earned around that much once they are fully established. Obviously if you do really well and become a partner in the business probably a bit more money in it for you.
Like you say though not a great life though the same can be said for many City jobs, they do reward you financially but can really take their toll on a person. One of my uni mate's cousin was an Investment banker and he told me how he was suffering with depression from work related stress and became quite paranoid as he thought he was going to be sacked. I know an accountant who worked at a big investment bank and he left a few years after joining due to the work load as well.