During the 2016 EU membership referendum Campaign, West was involved with Britain Stronger In Europe, campaigning for the UK to remain within the European Union, arguing that "Britain would be stronger, more prosperous, more secure and more peaceful" if they were to remain within the EU. West's constituency of Hornsey and Wood Green secured the highest remain vote in the UK with 81.5% voting to remain. Following the EU referendum, West confirmed she would vote against invoking Article 50 should a vote come before parliament. Between September 2016 and June 2017, she was an officer of the All-Party Parliamentary Group on UK-EU Relations.