If ur a partner and can charge £175 per hour in your own firm rather than having your firm charge £500+ for you then salarying you, you will earn a mint in family etc on the high street. Of course I dont know what partner salaries are like in "commercial" type firms, and it will depnd on being an equity/asset partner, or on being how senior, how quickly you make partner and your levels of expertise. But if you can charge that much per hour personally and you get loads of chargeable hours you wil make a mjint.