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About us

Glass's was founded in 1933 by William Glass and the first Guide to Car Values was published in July of that year. Since that time the company has expanded into Commercial Vehicle, Motorcycle and Caravan values, supplying data in printed, electronic and web formats.

In 2008 Glass's celebrates its 75th Anniversary - no-one has been valuing vehicles longer than we have. We are the market leader - our guides and valuations are widely used throughout the entire
automotive industry - from car dealers (where we estimate that more than 90% buy Glass's Guide
to Car Values), to insurance assessors, vehicle fleet and finance houses and increasingly by
private consumers who wish to ensure that they are getting an accurate part-exchange valuation
for their car, or to check that the asking price of a vehicle that they are interested in buying is fair
and reflects its market value.

Front Cover of the first
issue of Glass's Guide
to Car Values (July 1933)
Front Cover of a recent
Glass's Guide to Car Values


About William Glass


William Glass

William Glass not only published the first Guide to Used Car Values, but had an innovative
and enquiring mind and was also responsible for the:

  • Portable hydraulic jack
  • Electric switch-off kettle
  • Self-filling fountain pen
  • Through-the-propeller machine gun firing mechanism

Other Facts…
  • Scottish born
  • Engineer by trade
  • Manufactured Cars under the Firefly marque for a short period of time in Croydon, Surrey
  • First person to hold a motor auction
  • First person to provide uniformed attendants at petrol filling stations


About our Valuations


Glass's observes and records well over 1 million vehicle sale prices from a wide range of sources
every year and these statistics are coupled with the extensive knowledge of our team of editors,
all of whom specialise in a particular area of the market, to deliver the most widely trusted
valuations in the market (Glass's Guide is the highest circulating title in the market, with over 90%
of car dealers subscribing).


More...


Glass's is part of the privately-owned EurotaxGlass group of companies that has operations in
more than 30 European countries. Automotive data is at the centre of the entire operation and
the group provides leading-edge solutions to more than 25,000 customers across Europe in
all sectors of the automotive market.

In the UK, Glass's employs almost 200 staff and is based in Weybridge, Surrey

Glass's HQ in Weybridge, Surrey