The firm has more than 500 legal professionals on board, including former prime minister Jean Chretien. In 'the last five weeks', more than five partners have gone, according to The Globe and Mail. The practice accepts that it is going through a challenging time and has said that it is undertaking a 'strategic review'. It is this review which has triggered some of the exits, it says. Mr Lawson is going to McCarthy Tetrault. Heenan Blaikie has nine Canadian offices and one in Paris. Source: The Globe and Mail