Five private companies, who employ around three quarters of Scotland's arms industry workforce, had thousands of closed door meetings with Westminster.
The arms industry is preparing to use two spaceports planned for Scotland to launch military spy satellites, an investigation by The Ferret can reveal.
Bombs made by arms multi-national Raytheon has been linked to war crimes in Yemen, but the company did not speak to investigating MPs.
Public sector workers will be "shocked and appalled" to learn of the arms industry investments, say critics.
28 firms from Scotland due to attend an arms fair dubbed a “festival of violence” - including a US arms giant with a factory in Fife.
An SNP MP who criticised UK arms sales to Saudi Arabia has received more than £400 worth of hospitality from a defence lobby group.