Ciupek, K; Tompkins, J; Williams, K; Brown, A; Robins, C; Allerton, J; McGhee, E; Kantilal, V; Walker, D; Bradshaw, C; Lilley, A; Butterfield, D; Brown, R J C; Priestman, M; Tremper, A; Ek, D; Green, D (2024) Airborne particle concentrations, particle numbers, and black carbon in the United Kingdom - annual report 2023. NPL Report. ENV 57

Twigg, M M; Di Marco, C; McGhee, E; Braban, C F; Nemitz, E; Brown, R J C; Blakley, K C; Leeson, S r; Sanocka, A; Green, D C; Priestman, M; Riffault, V; Bourin, A; Minguillon, M C; Via, M; Ovadnevaite, J; Ceburnis, D; O'Dowd, C; Poulain, L; Stieger, B; Makkonen, U; Rumsey, I C; Beachley, G; Walker, J T; Butterfield, D (2023) The potential of high temporal resolution automatic measurements of PM2.5 composition as an alternative to the filter-based manual method used in routine monitoring. Atmospheric Environment, 315. 120148

Ciupek, K; McGhee, E; Tompkins, J; Williams, K; Brown, A; Butterfield, D; Allerton, J; Bradshaw, C; Lilley, A; Kantilal, V; Robins, C; Sweeney, B; Brown, R J C; Priestman, M; Fuller, G; Green, D; Tremper, A (2023) Airborne Particle Concentrations, Particle Numbers and Black Carbon in the United Kingdom - Annual report 2022. NPL Report. ENV 50

Ciupek, K; McGhee, E; Tompkins, J; Williams, K; Brown, A; Butterfield, D; Karimi, C; Allerton, J; Bradshaw, C; Buckley, P; Lilley, A; Robins, C; Sweeney, B; Brown, R; Quincey, P; Sims, A; Priestman, M; Font Font, A; Fuller, G; Green, D; Tremper, A (2022) Airborne particle concentrations, particle number and black carbon in the United Kingdom - annual report 2020. NPL Report. ENV 42

Ciupek, K; McGhee, E; Tompkins, J; Williams, K; Brown, A; Butterfield, D; Allerton, J; Bradshaw, C; Buckley, P; Lilley, A; Kantilal, V; Robins, C; Sweeney, B; Brown, R; Priestman, M; Font Font, A; Fuller, G; Green, D; Tremper, A (2022) Airborne particle concentrations, particle number and black carbon in the United Kingdom - annual report 2021. NPL Report. ENV 43

Butterfield, D; Martin, N A; Coppin, G; Fryer, D E (2022) Corrigendum to: Equivalence of UK nitrogen dioxide diffusion tube data to the EU reference method (Atmos. Environ. 262 (2021) 118616). Atmospheric Environment, 270. 118830

Butterfield, D; Martin, N A; Coppin, G; Fryer, D E (2021) Equivalence of UK nitrogen dioxide diffusion tube data to the EU reference method. Atmospheric Environment, 262. 118614 ISSN 13522310

Butterfield, D (2021) Market Review of Gas Sensors for Industrial Applications. NPL Report. ENV 40

Ciupek, K; Butterfield, D; Quincey, P; Sweeney, B; Lilley, A; Bradshaw, C; Fuller, G; Green, D; Font Font, A (2021) 2019 Annual Report for the UK Black Carbon Network. NPL Report. ENV 38

Allerton, J; Tompkins, J; Matsakas, F; Butterfield, D; Brown, A; Buckley, P (2021) Testing of a fume and dust extraction system as mitigation for aerosol generating procedures in a dental surgery. NPL Report. ENV 41

Butterfield, D; Tompkins, J (2021) Measurement of Airborne Particles in a Dental Practice using Multiple Optical Particle Counter Instruments. NPL Report. ENV 37

McGhee, E; Tompkins, J; Hessey, I; Robins, C; Butterfield, D; Quincey, P; Brown, R; Green, D; Tremper, A; Priestman, M; Font Font, A (2017) Airborne Particulate Concentrations and Numbers in the United Kingdom (phase 3), Annual report 2016. NPL Report. ENV 26

Beccaceci, S; McGhee, E; Robins, C; Butterfield, D; Tompkins, J; Quincey, P; Brown, R J C; Green, C; Tremper, A; Priestman, M; Font Font, A (2016) Airborne Particulate Concentrations and Numbers in the United Kingdom (phase 3) Annual report 2015. NPL Report. ENV 11

Butterfield, D; Beccaceci, S; Quincey, P; Sweeney, B; Lilley, A; Bradshaw, C; Fuller, G*; Green, D*; Font Font, A* (2016) 2015 Annual report for the UK Black Carbon Network. NPL Report. ENV 7

Butterfield, D; Whiteside, K; Quincey, P (2009) UK non-automatic hydrocarbon network: Annual report for 2008. NPL Report. AS 44

Quincey, P G; Butterfield, D; Green, D*; Coyle, M*; Cape, J N* (2009) An evaluation of measurement methods for organic, elemental and black carbon in UK ambient air monitoring sites. Atmos. Environ., 43 (32). pp. 5085-5091.

Butterfield, D; Lipscombe, R P; Brown, R J C; Williams, M (2008) UK Heavy Metals Network expansion report. NPL Report. AS 28

Butterfield, D; Gee, M G (1993) The combined effect of speed and humidity on the wear and friction of silicon nitride. Wear, 162-16 (A). pp. 234-245.