On 31 July 2014, Jenkinson joined fellow London-based top-flight club West Ham United for a season-long loan deal. He suffered a pre-season hamstring injury in August, in a match in the Schalke 04 Cup against Málaga, and did not make his debut for West Ham until 15 September, in a 2–2 away draw against Hull City. Jenkinson quickly established himself as the team's first-choice right-back and impressed pundits and fans with his consistent displays and good form.
