Oldbury and Seal Chart

{{Infobox SSSI

|image= Redhill Wood, Seal Chart - geograph.org.uk - 478475.jpg

|image_caption = Redhill Wood, Seal Chart

|name= Oldbury and Seal Chart

|aos= Kent

|interest=Biological

|gridref={{gbmappingsmall|TQ 574 557}}

|area= {{convert|212.4|ha|acre|abbr=off}}

|notifydate= 1990

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000279%27 Magic Map]

}}

Oldbury and Seal Chart is a {{convert| 212.4 |ha|acre|abbr=off|adj=on}} biological Site of Special Scientific Interest east of Sevenoaks in Kent, England.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1000279&SiteName=oldbury&countyCode=&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Oldbury and Seal Chart | series= Sites of Special Scientific Interest|publisher=Natural England|access-date = 20 February 2018}}{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000279%27|title=Map of Oldbury and Seal Chart|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 20 February 2018}} It is in the Kent Downs Area of Outstanding Natural Beauty,{{cite web |url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1000279.pdf |title= Oldbury and Seal Chart citation |series= Sites of Special Scientific Interest |publisher= Natural England |access-date= 17 January 2018 |url-status= live |archive-url= https://web.archive.org/web/20180102075934/https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1000279.pdf |archive-date= 2 January 2018 }} and part of it is Oldbury Hill, a National Trust property{{cite web|url=https://www.nationaltrust.org.uk/oldbury-hill|title=Oldbury Hill|publisher=National Trust|access-date=17 January 2018|url-status=live|archive-url=https://web.archive.org/web/20180118122454/https://www.nationaltrust.org.uk/oldbury-hill|archive-date=18 January 2018}} and Iron Age hill fort.{{cite web|url=http://www.pastscape.org.uk/hob.aspx?hob_id=409479|title=Oldbury Camp|series=Pastscape|publisher=Historic England|access-date= 20 February 2018}}

More than 250 species of fungi have been recorded in this site, including 10 which are rare or scarce. There are also molluscs which are characteristic of ancient woodland, including the rare snail Phenacolumax major and the scarce slug Limax tenellus.

The site is crossed by several public footpaths.