The Modernisation Committee has been set up to “consider reforms to House of Commons procedures, standards, and working practices.” It asked for views on what topics it should prioritise for action as it develops its work programme. My response is based on my ongoing research into operationalising and evaluating the impartiality of briefing reports provided by the Commons Library to MPs and their staff. I seek to highlight the relevance of impartiality to the Modernisation Committee’s workstreams and offer evidence-based recommendations.