I did private client and pensions at various times. I didn't mind private client, but hated pensions. I just got fed up with office politics, lack of flexibility and staring at a screen all day. Also, chargeable units are the work of the devil. It wasn't so bad when I worked in London, as you pretty much just put down 100% of your time, billed 100% of your time and got paid for 100% of your time - it's much more stressful in smaller regional firms where you have to do 10 hours' worth of work for 3 hours' chargeable time
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I'm now going to HMRC to join the graduate scheme to become a tax inspector! Hoping this will be more flexible hours and interesting work - money is not as good, but I'm not massively money-motivated so don't care about that too much.