Although Middle England does not refer to a geographical region, it may be understood to refer to the inhabitants of suburbs in the South of England and the Midlands, typified by the small towns that make up Metro-Land, the suburban areas north-west of London that are served by London Underground's Metropolitan line. The BBC described the Kent town of Tunbridge Wells as the spiritual home of Middle England, with particular reference to the popular characterisation of Disgusted of Tunbridge Wells, the pseudonym of an imaginary, incensed letter-writer. Emphasising its lack of geographical location, the writer Nick Inman likened Middle England to J. R. R. Tolkien's Middle-earth: We know everything about it except where it is.