Sheffield Hallam would be an outlier on the Tory plot, not the Remain one.
The Outliers for Remain on the Boxplot are: D1 - Hackney South and Shoreditch D4 - Streatham, Manchester Withington, Bristol West, Kensington, Norwich South D5 - Hornsey and Wood Green, Cities of London and Westminster, Hampstead and Kilburn, Hove, Ealing Central and Acton D6 - Oxford East, Brighton Pavilion, Leeds North East, Tooting, Battersea, Chelsea and Fulham D7 - Putney, Finchley and Golders Green D8 - Leeds North West, Cambridge, Bath D9 - Kingston and Surbiton (only 58.5%) D10 - Richmond Park, Wimbledon
The Leave Outliers: D9 - South Staffordshire, Old Bexley and Sidcup D10 - Rayleigh and Wickford
Ran a 'Cluster Analysis' (free online tool) for the English seats based upon Deprivation score and Brexit Vote. Used the urbanity groups but combined Rural 50/75/Sig Rural and Large & Other Urban to obtain near parity, set for nine clusters in each group. Obtained these 27 clusters (no great surprises):-