Historical clue formulations

• British tax — 2009-10-11
• Lead-in to pipe or pit — 2008-11-12
• British tax — 2007-07-22
• Tax, in Tottenham — 2006-12-09
• Tax, in Britain — 2004-04-23
• British tax — 2002-11-01
• British tax — 1999-05-02
• British tax — 1998-05-07
• Start of dirty pool? — 1995-05-26
• Word with pool or pit — 1995-05-20
• British levy — 1995-04-23