The attack, which took place on the afternoon of Monday 22 January at the Horton depot of Kay Express, is the latest in a spate of IT robberies in the M4 corridor. Three weeks ago burglars made off with £150,000 worth of memory chips from Newbury-based reseller Rombyte. The attacks follow last December's attempted break-in at Hungerford chip manufacturer Hypertec.
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Kay Express owner Kay Ram said, "There were at least three people involved. One of the men was in the getaway car, another was standing over our warehouseman and a third was watching over a group of builders who were working on our site. As far as I am aware, the gun was held to our warehouseman's face throughout the raid."
According to local newspaper the Windsor & Slough Express, the raiders then made their escape in a dark coloured BMW saloon.
Detective Inspector Greg Elphick of Thames Valley Police said, "We would like to hear from anybody who saw the men drive off at high speed. We would also like to hear from anyone in the industry if they are offered anything like this technology in unusual circumstances."
A police spokesman said £18m worth of computer chips have been stolen over the last 18 months in the south of England alone.
Companies outside the M4 corridor are also falling prey to robberies. Last November saw the theft of an estimated £1m worth of computer equipment from the London headquarters of Deutsche Bank.