There's a special fund for ex-PMs John Major set it up to fund their public appearances and correspondance duties.
Tony Blair Claimed £169,000 from this but Maggie Thatcher has claimed over half a million despite not doing any public duties on health advice!
http://www.theanswerb.../Question1070356.html
Members of Parliament belong to the parliamentary pension scheme. This is a final salary scheme with
a current accrual rate of 1/40th or 1/50th. It is a contributory pension with the contribution rate now set at
10% (40th accrual) and 6% (50th accrual) of salary
http://www.parliament...n-office/fymp/m05.pdf