The relatively large Sainsbury's located at 42-45 Sidney St, Cambridge CB2 3HX. Existed in late 2010's and early 2020's Ciro Santilli witnessed.
Being the only relatively large grocery shop in central Cambridge near several colleges, where manu students live, makes this one of the most popular grocery shopping location for many of the students.
The Oxford equivalent has to be the Tesco Express on Magdalen St, Oxford OX1 3AD, but not sure if there's a name for it.
Figure 1. Source.