ix.2009 - present Senior Curator (Band 4) for Phthiraptera, Thysanoptera, Collembola, Protura, Diplura,Thysanura, Lepidoptera, Entomology Department, NHM.
2007 - viii.2009 Collections Manager (Band 4) for Hymenoptera, Orthopteroidea, Neuropteroidea, Thrichoptera, Ephemeroptera, Megaloptera, Mecoptera, Odonata Entomology Department, NHM.
2004 - 2007 Collections Manager & Division Head (Band 4) for 'Hemimetabola' (Orthoptera, Hemiptera, Psocoptera, Thysanoptera, Phthiraptera, Arachnida, Myriapoda, Ephemeroptera, Megaloptera, Mecoptera, Odonata) and Neuropteroidea & Trichoptera, Entomology Department, NHM.
1998 - 2003 Lead Curator, (Band 5) Hemiptera: Sternorrhyncha & microscope slide conservator, Entomology Department, NHM.
1979-98 Curator Band 5 (SO & ASO), Aphid collection and microscope slide preparator. Research with Roger Blackman (Insect Plant Division) on aphid taxonomy, using computer statistical analyses, electrophoretic and genetic methods and preparing scientific papers, Entomology Department, NHM.
1977-79. Assistant Scientific Officer on Lepidoptera Section (curation of micro and macro-lepidoptera (Entomology Department, NHM).
1977: BSc Honours (2 ii), Applied Zoology & Forestry, University of Wales (U.C.N.W. Bangor).
1994: MA, Museums Studies, University College London (Institute of Archaeology).
1995: AMA, Museums Association Diploma.
Aphid collection in central Chile with The University of Chile, Santiago, March 1999, November-December 2000 & November-December 2001 (British Council, European Community, Operation Raleigh funded respectively).
Chair of the Natural Sciences Collections Association 2008-2011
Secretary of the Natural Sciences Collections Association 2003-2008
Chair of the Natural Science Conservation Group 2001-2003
Secretary of the Natural Science Conservation Group 1997- 2001The Natural Sciences Collections Association
Represent NatSCA on Insect Collections Managers' Group
Natural Sciences Conservation Group representative on the National Council for Conservation-Restoration 1998-2001.
Member of United Kingdom Institute for Conservation Professional Accreditation selection Board 2001.
2000. Guest lecturer University of Chile, Santiago, New Millennium Seminar Series, "Biodiversity & phylogenetic relationships of native Chilean aphids".
Responsible for the Phthiraptera, Thysanoptera, Psocoptera, Collembola, Protura, Diplura and Thysanura collections within the Lepidoptera section of the Entomology Department. Consultant on microscope slide collections within and beyond the Museum.
The re-curation of the Phthiraptera microscope slide collection following the latest Taxonomic order.
Overseeing the conservation of deteriorating Collembola microscope slides by volunteer microscopist Dennis Fulwood.
Blackman, R.L, Brown, P.A., Ramirez, C.C. & Niemeyer, H.M.( 2003 ) Karyotype variation in the South American aphid genus Neuquenaphis (Homoptera, Aphididae, Neuquenaphidinae) Hereditas 138 : 6-10 .
Brown, P.A.,( 1989 ) Keys to the alate Aphis (Homoptera) of northern Europe. Occasional Papers on Systematic Entomology No.5: : 29 pp .
Brown, P.A. & Blackman, R.L.( 1988 ) Karyotype variation in the corn leaf aphid (Rhopalosiphum maidis) species complex (Homoptera, Aphididae), in relation to host plant and morphology. Bulletin of Entomological Research 78 : 351-363. .