['< sod > as of october 2015 there are sixteen local nature reserves in [ [ buckinghamshire ] ]. { { efn | natural england lists a seventeenth buckinghamshire site, denham quarry park, but this appears to be an error. the [ [ river colne, hertfordshire | river colne ] ] forms the boundary between buckinghamshire to the west and the [ [ london borough of hillingdon ] ] to the east. the natural england map shows most of denham quarry park east of the river, and overlapping with a london site, [ [ denham country park ] ]. < ref > { { cite web | url = http : / / www. lnr. naturalengland. org. uk / special / lnr / lnr _ details. asp? c = 0 & n = denham & id = 1463 | title = denham quarry park | series = local nature reserves | publisher = natural england | date = 8 june 2015 | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / magic. defra. gov. uk / magicmap. aspx? starttopic = designations & activelayer = lnrindex & query = ref _ code % 3d % 271083176 % 27 | title = map of denham quarry park | series = local nature reserves | publisher = natural england | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / www. lnr. naturalengland. org. uk / special / lnr / lnr _ details. asp? c = 0 & n = denham & id = 543 | title = denham country park | series = local nature reserves | publisher = natural england | date = 23 march 2015 | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / magic. defra. gov. uk / magicmap. aspx? starttopic = designations & activelayer = lnrindex & query = ref _ code % 3d % 271009276 % 27 | title = map of denham hill country park | series = local nature reserves | publisher = natural england | accessdate = 7 april 2016 } } < / ref > } } there is access to all sites except [ [ buckingham sand pit ] ]. < eod > < sod > as of april 2016 there are sixteen local nature reserves in [ [ buckinghamshire ] ]. { { efn | natural england lists a seventeenth buckinghamshire site, denham quarry park, but this appears to be an error. the [ [ river colne, hertfordshire | river colne ] ] forms the boundary between buckinghamshire to the west and the [ [ london borough of hillingdon ] ] to the east. the natural england map shows most of denham quarry park east of the river, and overlapping with a london site, [ [ denham country park ] ]. < ref > { { cite web | url = http : / / www. lnr. naturalengland. org. uk / special / lnr / lnr _ details. asp? c = 0 & n = denham & id = 1463 | title = denham quarry park | series = local nature reserves | publisher = natural england | date = 8 june 2015 | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / magic. defra. gov. uk / magicmap. aspx? starttopic = designations & activelayer = lnrindex & query = ref _ code % 3d % 271083176 % 27 | title = map of denham quarry park | series = local nature reserves | publisher = natural england | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / www. lnr. naturalengland. org. uk / special / lnr / lnr _ details. asp? c = 0 & n = denham & id = 543 | title = denham country park | series = local nature reserves | publisher = natural england | date = 23 march 2015 | accessdate = 7 april 2016 } } < / ref > < ref > { { cite web | url = http : / / magic. defra. gov. uk / magicmap. aspx? starttopic = designations & activelayer = lnrindex & query = ref _ code % 3d % 271009276 % 27 | title = map of denham country park | series = local nature reserves | publisher = natural england | accessdate = 7 april 2016 } } < / ref > } } there is access to all sites except [ [ buckingham sand pit ] ]. < eod >']