Several large collections of Western manuscripts are excluded from the Additional manuscripts series and are held as separate, named collections. These include:
- Baldwin Papers
- Barlow of Thornby Papers
- Butterfield Papers
- Buxton Papers
- Cambridge Scientific Instrument Co. Archives
- Cholmondeley (Houghton) Papers
- Coke of Weasenham Papers
- Crewe Papers
- Darwin Papers
- Ely Dean and Chapter Archives
- Ely Diocesan Records
- Greek Play Committee Papers
- Haddon Papers
- Hardinge Papers
- Hengrave Hall Manuscripts
- Heveningham Hall Archives [see Vanneck Papers]
- Stefan Heym Archive
- Jardine Matheson Archives
- Jardine Skinner Archives
- Kennet Papers
- J. S. Mitchell Papers
- Needham Papers
- Parkes Papers
- Peterborough Dean and Chapter Archives
- Pembroke College Medieval Manuscripts
- Peterhouse Medieval Manuscripts
- Phoenix Assurance Archives
- Queens' College Archives
- Royal Greenwich Observatory Archives
- Schnitzler Papers
- 7:84 Theatre Company Archives
- Templewood Papers
- Vanneck Papers
- Vickers Archives
- Robert Walpole Papers (see Cholmondeley (Houghton))