The student said he had no recollection of throwing the bin and there was no evidence he had done so, Mr Spens said.

BBC: Charlie Gilmour

However, three of the largest firms in Scotland - Dundas and Wilson, Maclay Murray and Spens and Shepherd and Wedderburn - reported depressed or flatlining turnover.

BBC: Law firm Ledingham Chalmers reports 'steady growth'

They have sold on parts of the corporate law partnership to firms in Glasgow, Edinburgh and Manchester - including Maclay Murray and Spens, Dundas and Wilson, and Weightmans.

BBC: Semple Fraser