Coombes previously worked for
Tom Watson as his head of policy and communications for three years when he was Labour deputy leader and subsequently as an advisor for the Mayor of London,
Sadiq Khan. In July 2024, Sarah Coombes was appointed
parliamentary private secretary to the
Leader of the House of Commons. Since September 2025 she has been parliamentary private secretary to the
Home Secretary. In February 2025, Sarah Coombes started a campaign to crack down on the use of illegal "ghost" number plates which cannot be recognised by
automatic number-plate recognition cameras. ==References==