Six evaluation trenches were excavated on the site between 31 July and 18 August 2017. Site constraints included underground services and a live rail track to the West of the site : due to this, a 10m easement was put in place in consultation with Network rail and the trenches were moved to avoid the line services. Archaeological excavation was carried out in accordance with the Written Scheme of investigation. Breaking out and excavation of each trench by a tracked excavator was monitored by a MOLA supervisor. Trench location were originally surveyed on site by MOLA surveyors though several modifications were necessary and these were subsequently tied to the OS grid. The evaluation found extensive railway tracks and other infrastructure that form part of the 19th century 'Stratford Works' that began in the 1840's and continued into the 1960's.