British Museum

http://www.britishmuseum.org/research/collection_online/search.aspx?searchText=hereford*&images=true

National Museum of Scotland:Pembridge helm

http://www.nms.ac.uk/explore/collections-stories/art-and-design/pembridge-helm/

Shrewsbury  museums

http://www.darwincountry.org/explore/000558.html

National Museum of Wales

http://www.museumwales.ac.uk/curatorial/

British and Irish Archaeology online

http://www.biab.ac.uk/

Council for British Archaeology

http://new.archaeologyuk.org/