Recent parliamentary by-elections in the UK have followed MP resignations, most recently in Holborn and St Pancras on 8 October 2026 after Keir Starmer stepped down to pursue international roles. No further Westminster contests currently have confirmed dates. Trader attention centers on procedural triggers, including potential recall petitions under the Recall of MPs Act if an MP receives a suspension of more than 10 sitting days. An ongoing Parliamentary Commissioner for Standards inquiry into Nigel Farage’s undeclared donations in Clacton could reach the Committee on Standards soon, raising the prospect of another by-election there before year-end. Local council by-elections continue on regular schedules but do not affect the parliamentary timeline. Outcomes hinge on formal vacancies and parliamentary processes rather than fixed electoral calendars.