''. Stained glass by
John Piper. The place-name 'Lamberhurst' is first attested in the
Textus Roffensis of circa 1100 AD, where it appears as
Lamburherste. The name means 'lambs' hill or wood'. Prior to the
Industrial Revolution, Lamberhurst was a centre for the
Wealden iron industry, which was established in
Roman times. Since then it has had some importance for
hop-growing; been a weekend home to
Margaret Thatcher; been controversially
by-passed; and played a major role in English wine production. Lamberhurst
civil parish on formation, when such parishes first became possible in the 19th century, was in both Kent and
East Sussex. The line of the county boundary was adjusted following the
Local Government Act 1894, which required that parish boundaries be aligned with counties. The redrawing of the county boundary included transferring part of Bayham Lake so its entirety was in Kent. ==Geography and topography==