The Secretary of State for the Department of Digital, Culture Media and Sport has granted Scheduled Monument Consent for the work with the proviso that the applicant engages an archaeological contractor to supervise and monitor the works in accordance with a Written Scheme of Investigation which has been approved by Historic England (Scheduled Monument Consent: S00130289). The Scheduled Monument Consent required that the applicant engages an archaeological contractor to supervise and monitor the works in accordance with a Written Scheme of Investigation which has been approved by Historic England. The fieldwork specified with WSI was intended to ensure that the works will not have an impact on buried archaeological remains as well as to ensure no unnecessary collateral damage to the monument occurs. De Montfort University has appointed structural engineers to carry out a survey to investigate the cause of cracking to the external walls of the brick Ancillary Block which abuts the John of Gaunt's Yard on the south side of the Great Hall of Leicester Castle. The work is required to provide information to inform a remedial strategy and will include intrusive investigation work, including the excavation of a trial hole (outside south-east corner to 1m depth), a core hole, arboricultural surveys, and provision of a temporary tower scaffold This report details the results of an archaeological watching brief that was carried out by University of Leicester Archaeological Services (ULAS) at Leicester Castle Business School Store, Leicester (SK 5823 0414). The work was carried out in November 2021 on behalf of De Montfort University during groundworks in accordance with the Ancient Monuments and Archaeological Areas Act 1979. De Montfort University has appointed structural engineers to carry out a survey to investigate the cause of cracking to the external walls of the brick Ancillary Block which abuts the John of Gaunt's Yard on the south side of the Great Hall of Leicester Castle. The field work was undertaken to ensure that the works will not have impact on the buried archaeological remains. The site is located within Leicester Castle and the Magazine Gateway Scheduled Monument (List Entry Number 1012147) located within Leicester city centre on the eastern bank of the canalised River Soar. It includes the earthwork and buried remains of a motte and bailey castle, the 12th century northern extension to the bailey, and the northern part of the fortified enclosur...