Russell Silberston: The scene is set for a rally in sterling

The UK has had two female Prime Ministers. The first of them, Margaret Thatcher, made a speech at Lancaster House on 18 April 1988 challenging business to embrace the "opportunities presented by the completion of the Single Market in the European Community in 1992".  The second, Theresa May, speaking in exactly the same place, on 17 January 2017, vowed to take us out again. The speech brought some welcome clarity about how the government intends to negotiate an exit from the European Union and, in effect, fired the starting gun for the Brexit process. In line with what appears to be g...