Thorn

From October 1979 (Great Britain)

From February 1991 - this special red-coated lamp is believed to have been used in areas where a quick adjustment of the eye to darkness is required. (Great Britain)

Click here to see two of these lamps operating.

13W

From May 1988 (Great Britain)

20W

UV lamp - click here to see the lamp in use. (From April 1980 - Great Britain)

40W

'U'-shaped tube (From October 1988 - Enfield, United Kingdom)

Thorn EMI 4ft 40W tube in red finish (From March 1984 - Great Britain)

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