During his time as an MP he sat on the Science and Technology Select Committee.
In 2006, MPs were asked three questions by the Rough Guide's Mark Ellingham on how seriously they took climate change as politicians and as responsible, active citizens. Tim Boswell replied:
- "I believe we can all do something to help. Probably the most important decision I have taken is to go for a 1.2ltr car. Daventry which I represent has one of the best recycling records in the country and pro-active Councils and environmental businesses. I encourage and celebrate this wherever practicable."
Tim Boswell was one of 79 MPs who signed Early Day Motion 377 noting the achievements of Charles Darwin, and calling for Darwin's birthday to be designated a public holiday to honour "one of the fathers of modern science and one of Britain's greatest, if not the greatest, scientific minds."