PRS staff 'grey literature' reports for 2011 presented in report number order Carrott, J., Foster, A. and Martin, G. (2011). Evaluation of biological remains from archaeological monitoring and targeted excavations at Little Catwick Quarry, Leven (nr Beverley), East Riding of Yorkshire (site code: LCQ2009). PRS 2011/01. Foster, A. and Carrott, J. (2011). Evaluation of biological remains recovered from excavations at St John’s College, 6 South Bailey, Durham University, Durham (site code: SJD10). PRS 2011/02. Carrott, J., Martin, G. and Foster, A. (2011). Evaluation of biological remains from sediment samples recovered during a watching brief of groundworks associated with the Brough Tidal Defence Scheme, Brough, East Riding of Yorkshire (site code: WB2010.021). PRS 2011/03. Foster, A. and Carrott, J. (2011). Evaluation of biological remains from samples recovered during excavations undertaken at the site of the former Killingbeck Hospital, Leeds (site code: KBH10). PRS 2011/04. Foster, A. and Carrott, J. (2011). Evaluation of biological remains from two samples recovered during excavations undertaken at Cheesecake Farm, Norton, Malton, North Yorkshire (site code: NCF10). PRS 2011/05. Foster, A., Carrott, J. and Martin, G. (2011). Evaluation of biological remains from excavations undertaken at Wilberforce College, Saltshouse Road, Kingston upon Hull (site code: WCS2010). PRS 2011/06. Martin, G., Jaques, D., Foster, A. and Carrott, J. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 21 and 22 (site code: ECP09). PRS 2011/07. Carrott, J. (2011). Assessment for possible intestinal parasite remains from samples from excavations at En Maison-Dieu, Meursault, Côte d’Or, Burgundy, France. PRS 2011/08. Martin, G., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 24 (site code: ECP09). PRS 2011/09. Martin, G., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 33 (site code: ECP09). PRS 2011/10. Carrott, J., Martin, G., Jaques, D. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 77 (site code: ECP09). PRS 2011/11. Carrott, J. and Foster, A. (2011). Evaluation of biological remains from excavations undertaken on land to the rear of 1-27 Skelton Close, Market Weighton, East Riding of Yorkshire (site code: SCM2010). PRS 2011/12. Carrott, J. and Martin, G. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 88 (site code: ECP09). PRS 2011/13. Carrott, J., Martin, G. and Foster, A. (2011). Assessment of biological remains from excavations undertaken at Eddisbury Hillfort, Eddisbury Hill, Cheshire (site code: E1076). PRS 2011/14. Carrott, J., Martin, G. and Jaques, D. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 40, 44, 48, 52, 58, 60 and 65 (site code: ECP09). PRS 2011/15. Martin, G., Foster, A. and Carrott, J. (2011). Evaluation of biological remains from excavations undertaken on land off Beech Close and Ash Grove, Market Weighton, East Riding of Yorkshire (site code: BCM2010). PRS 2011/16. Carrott, J., Martin, G., Foster, A. and Jaques, D. (2011). Evaluation of biological remains from excavations undertaken at the Western Extension to North Cave Wetlands Nature Reserve (Phase 1B – adjacent to Newport Road), North Cave, East Riding of Yorkshire (site code: NRD2010). PRS 2011/17. Martin, G., Jaques, D., Foster, A. and Carrott, J. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 80 and 105 (site code: ECP09). PRS 2011/18. Martin, G., Jaques, D., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 10 and 11 (site code: ECP09). PRS 2011/19. Foster, A., Martin, G. and Carrott, J. (2011). Assessment of biological remains from features encountered during archaeological excavations at Ladybridge Farm, Nosterfield, North Yorkshire (site code: LBF0703 – 2010 works). PRS 2011/20. Martin, G., Carrott, J., Jaques, D. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 12, 13 and 14a (site code: ECP09). PRS 2011/21. Martin, G., Foster, A., Carrott, J. and Jaques, D. (2011). Technical Report: Biological remains recovered from excavations associated with the Marton to Acomb Landing Pipeline, North Yorkshire (site codes: YRG08/YRG09 – Field 22; MAL08 – Field 26; PLG08 – Field 23). PRS 2011/22. Foster, A. and Martin, G. (2011). Evaluation of biological remains from features encountered during archaeological excavations at Leventhorpe Hall, Thornton Road, Bradford, West Yorkshire (site code: LTH08). PRS 2011/23. Foster, A. and Carrott, J. (2011). Assessment of biological remains recovered from excavations at Donkey Field, Whitby Abbey, Whitby, North Yorkshire (site code: DFW10). PRS 2011/24. Foster, A. and Carrott, J. (2011). Assessment of biological remains from four samples recovered during a watching brief undertaken at Red Bank Quarry, Measham Brickworks, Measham, Leicestershire (site code: RBQ10). PRS 2011/25. Carrott, J. (2011). Technical report: parasite eggs from four samples from excavations at Kemble House Car Park, Aubrey Street, Hereford (site code: ASH10). PRS 2011/26. Foster, A., Martin, G. and Carrott, J. (2011). Assessment of biological remains from sediment samples from features encountered during archaeological excavations at Vale of Catmose College, Oakham, Rutland (site code: VCC11). PRS 2011/27. Foster, A. (2011). Assessment of vertebrate remains recovered during further excavations at Stretton Grandison, Herefordshire (site code: LORSG2). PRS 2011/28. Martin, G., Jaques, D., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 8 and 9 (site code: ECP09). PRS 2011/29. Carrott, J. and Foster, A. (2011). Assessment of waterlogged preservation of organic remains from borehole investigations of the nature and extent of sub-surface deposits at land off Atherton Way, Brigg, North Lincolnshire. PRS 2011/30. Foster, A. (2011). Evaluation of hand-collected vertebrate remains and shell from excavations at Hyde Laundry, Winchester, Hampshire (site code: HLW11). PRS 2011/31. Martin, G., Jaques, D., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 14b, 15, 16 and 16a (site code: ECP09). PRS 2011/32. Martin, G., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the A1 Dishforth to Barton Improvement, North Yorkshire – Fields 99, 103, 104, 107 and 108 (site code: A1DB09). PRS 2011/33. Foster, A., Martin, G. and Carrott, J. (2011). Evaluation of biological remains from an archaeological excavation at 31 Beckside, Beverley, East Riding of Yorkshire (site code: BSD2011). PRS 2011/34. Martin, G., Jaques, D., Carrott, J. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 0 (site code: ECP09). PRS 2011/35. Foster, A. and Carrott, J. (2011). Assessment of biological remains from features encountered during archaeological excavations at Potgate Quarry, North Stainley, Ripon, North Yorkshire (site code: PGQ11). PRS 2011/36. Foster, A. and Carrott, J. (2011). Assessment of biological remains from a deposit encountered during excavations at Tickhill Castle, Tickhill, Doncaster, South Yorkshire (site code: TCM2010). PRS 2011/37. Carrott, J. and Foster, A. (2011). Assessment of shell and vertebrate remains recovered from excavations at Scarborough Castle, Scarborough, North Yorkshire (site code: SBD11). PRS 2011/38. Carrott, J., Martin, G., Jaques, D. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Field 17 (site code: ECP09). PRS 2011/39. Carrott, J. and Foster, A. (2011). Evaluation of biological remains from three samples recovered from archaeological trial pits excavated at Wainfleet All Saints, Lincolnshire (site code: WFRS11; Accn no 2011.62). PRS 2011/40. Martin, G., Foster, A., Carrott, J. and Jaques, D. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North Yorkshire and East Riding of Yorkshire – Fields 6 and 7 (site code: ECP09). PRS 2011/41. Martin, G., Carrott, J., Jaques, D. and Foster, A. (2011). Assessment of biological remains recovered from excavations associated with the East Coast Pipeline, North