Roy, D.B., Brereton, T.M., Cruickshanks, K.L., J. Greatorex-Davies, N., Middlebrook, I., Rothery, P. & Warren, M.S. (2008) Developing A Uk-Wide Butterfly Monitoring Scheme: Integrating The Wider Countryside. Centre for Ecology and Hydrology and Butterfly Conservation.

Sparks, T.H., Collinson, N., Crick, H., Croxton, P., Edwards, M., Humber, K., Jenkins, D., Johns, D., Last, F., Maberly, S., Marquiss, M., Pickup, J., Roy, D.B., Sims, D., Shaw, D., Turner, A., Watson, A., Woiwood, I. & Woodbridge, K. (2006) Natural Heritage Trends Of Scotland: Phenological Indicators Of Climate Change.

Hill, M.O., Ames, S.L., Bacon, J., Botham, M.S., Lindsley-Leake, S., Marchant, J.H., Preston, C.D., Rehfisch, M.M., Roy, D.B., Roy, H.E., Tyler-Walters, H. & Wright, L. (2008) Non-Native Species Portal Feasibility Study. CEH, Huntingdon.

Burns, F., Eaton, M.A., Gregory, R.D., N. Fulaij, A., August, T.A., Biggs, J., Bladwell, S., Brereton, T.M., Brooks, D.R., Clubbe, C., Dawson, J., Dunn, E., Edwards, B., Falk, S.J., Gent, T., Gibbons, D.W., Gurney, M., Haysom, K.A., Henshaw, S., Hodgetts, N.G., Isaac, N.J.B., McLaughlin, M., Musgrove, A.J., Noble, D.G., O’Mahony, E., Pacheco, M., Roy, D.B., Sears, J., Shardlow, M., Stringer, C., Taylor, A., Thompson, P., Walker, K.J., Walton, P., Willing, M.J., Wilson, J. & Wynde, R. (2013) State Of Nature Report. The State of Nature partnership.

Fox, R., Brereton, T.M., Asher, J., August, T.A., Botham, M.S., Bourn, Na. D., Cruickshanks, K.L., Bulman, C.R., Ellis, S., Harrower, C.A., Middlebrook, I., Noble, D.G., Powney, G.D., Randall, R.D., Warren, M.S. & Roy, D.B. (2015) The State Of The Uk’s Butterflies 2015. Butterfly Conservation and the Centre for Ecology & Hydrology, Wareham, Dorset.

Hill, M.O., Cooper, J.M., Hiscock, K., Marchant, J.H., Preston, C.D., Rehfisch, M.M., Roy, D.B. & Tyler-Walters, H. (2007) Surveillance Of Non-Native And Newly-Arrived Species: A Proposal For A Non-Native Species Portal For Britain. Centre for Ecology and Hydrology, Huntingdon.

Roy, H.E., Pocock, M.J.O., Preston, C.D., Roy, D.B., Savage, J. & Tweddle, J.C. (2012) Understanding Citizen Science And Environmental Monitoring: Final Report On Behalf Of Uk Environmental Observation Framework. NERC/Centre for Ecology & Hydrology, Wallingford.

J. Greatorex-Davies, N., Brereton, T.M., Roy, D.B. & Wigglesworth, T. (2006) United Kingdom Butterfly Monitoring Scheme Report For 2005. Centre for Ecology and Hydrology, Huntingdon.

J. Greatorex-Davies, N., Brereton, T.M., Roy, D.B. & Wigglesworth, T. (2007) United Kingdom Butterfly Monitoring Scheme Report For 2006. Centre for Ecology and Hydrology, Huntingdon.

Botham, M.S., Brereton, T.M., Middlebrook, I., Cruickshanks, K.L. & Roy, D.B. (2008) United Kingdom Butterfly Monitoring Scheme Report For 2007. CEH, Wallingford.

Hill, M.O., Preston, C.D., Bosanquet, S.D.S. & Roy, D.B. (2007) BRYOATT - Attributes of British and Irish Mosses, Liverworts and Hornworts - Spreadsheet.

Hill, M.O., Preston, C.D. & Roy, D.B. (2004) PLANTATT - Attributes of British and Irish Plants - Spreadsheet.

Roy, D.B. (2006) The Effects Of Climate And Habitat On Butterfly Populations. University of Southampton.