M25高速公路 (英國)
參考文獻

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↑  This move would be bound to be resisted by the communities affected, including such major towns as Watford, Loughton and Epsom.London Assembly – Poll says M25 is London's "natural boundary". 2 March 2004.
↑  , The National Archive, 2003  [2011-09-05], （原始内容存档于2021-01-03）  that requires "a suitable proportion of the programmes made in the United Kingdom" to be made "in the United Kingdom outside the M25 area", defined in Section 362 as "the area the outer boundary of which is represented by the London Orbital Motorway (M25)".
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↑  M25高速公路肯特郡段－Google Maps
↑  M25高速公路薩里郡段－Google Maps
↑  M25高速公路大倫敦西部段－Google Maps
↑  M25高速公路白金漢郡段－Google Maps
↑  M25高速公路哈特福郡段－Google Maps
↑  M25高速公路埃塞克斯郡段－Google Maps
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↑  各方案示意圖可點此在Google Maps overlay上觀看 （页面存档备份，存于）
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