The stop is named 'Uel & Bobby Moore Academy - School' in TfL's system (https://tfl.gov.uk/bus/stop/490002119Y/uel-bobby-moore-academy-school?lineId=339) - it seems that 'UEL' refers to 'UCL' as there isn't any UEL facilities near the stop.

Since at least 2019 there's a (now rusty) TfL temporary bus stop sign outside Marshgate (UCL East), and 339 buses to Leytonstone are known to pick up / drop off passengers there. Not sure if it is intended to be a replacement of the original Uel & Bobby Moore stop. In any case, the stop is no longer shown as part of the 339 routeing.