The longest name of a place in the United Kingdom is
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysilio gogogoch
One another long place name (if not the longest):
Taumatawhakatangihangakoauauotamateaturipukakapiki maungahoronukupokaiwhenuakitanatahu
which also exists under the forms Taumatawhakatangihangakoauauotamateaurehaeaturipuk akapikimaungahoronukupokaiwhenuakitanatahu or Taumata-whakatangihanga-koauau-o-Tamatea-haumai-tawhiti-ure-haea-turi-pukaka-piki-maunga-horo-nuku-pokai-whenua-ki-tana-tahu
http://en.wikipedia.org/wiki/Taumata...uakit anatahu