Exclusion Crisis
The 1665 to 1667 Second Anglo-Dutch War was opposed by many former Parliamentarians on both commercial and political grounds and Thomas was one of those held in preventative detention during the invasion scare of 1666. While not directly involved in the 1679 to 1681 Exclusion Crisis, he ensured Northallerton returned anti-Court MPs and his house was searched for weapons after the 1683 Rye House Plot.