As many as 43 members of the House of Lords have investments totalling millions of pounds and senior roles in oil and gas companies.
Secretary of State for Scotland Alister Jack registered £70,000 worth of shareholdings two years ago in a private equity group linked to weapons makers.
Ferret Fact Service looks at claims about the cost of the Scottish Parliament and the First Minister's salary.
Peers living in Scotland claimed £2.1 million from taxpayers over 12 months, up 16 per cent on two years ago - and most of them were Liberal Democrats.
Just three people in Scotland have been identified as at risk of being "drawn into terrorism" in Scotland since 2011.
Some of the most expensive Scottish peers have claimed thousands of pounds for 'excessive' air travel between Scotland and London whilst campaigning on climate change.