Martin Rosenbaum fought 18-month battle to reveal who had written letters of citation for Charlotte Owen and Ross Kempsell

The reasons given for a peerage awarded by Boris Johnson have been described as “inadequate” and a “mystery” by a freedom of information campaigner after an 18-month battle.

Charlotte Owen, a former special adviser in the Conservative government, was appointed to the House of Lords in Johnson’s resignation honours list in 2023.