The SI works comprised the excavation of three Trial Pits (each measuring between 0.60 - 0.70m wide by 1.2m long, and excavated to 1.5m b.g.l) located within the northern part of the Maintenance Yard (Fig. 2). A single 10m deep borehole (for dynamic probing and window sampling) was placed at the eastern end of Trial Pit 3. The trial pits were positioned to give good coverage over the footprint of the proposed Kitchen and Servery to reveal information on the nature of the ground in the area, and the nature, form and depth of existing foundations to the extant buildings that bound the area to East, West and North. The length of the trial pits has been extended to increase the probability of revealing in-situ archaeological remains beyond the construction cuts for these buildings. All the information gained will be used to inform the final foundation design, which currently includes a limited number of piles and relatively shallow ground-beams. The second phase of the archaeological watching brief initially focused upon excavations for a new kitchen drain, but also observed ground reductions within the northern part of the Maintenance Yard, the northern ground floor area of the Chaplains III East Range, and within rooms and corridors on the ground floor in the south-east corner of the southern range of the Great Quad. Modern overburden was removed by hand or a small mechanical excavator to formation levels for the various foundations and the new kitchen drain. All archaeological remains that were encountered were excavated/examined and recorded stratigraphically in accordance with the WSI (OA 2019a). Spoil was monitored to recover artefacts. Oxford Archaeology (OA) also undertook a historic building recording at Magdalen College, Oxford in relation to the Winter Common Room Project. The recording focused on the areas being directly impacted by the development works and was undertaken in a phased programme. It included initial outline recording prior to the development and further recording during the works to cover features which had been exposed. It was also supported by historical research based on historic maps, previous studies and the principal secondary sources. The evidence from the trial pits strongly suggests that the truncation from the construction of the Maintenance Department in the late 20th century has removed all significant archaeology within the northern area of the Yard to a horizontal depth of between 0.63- 0.68m b.g.l or 56.95 - 57.06m...