Do not confuse with the record company E.M.I. Records, often followed by "(The Gramophone Co. Ltd.)".
For releases showing the "EMI" logo, see EMI.
EMI Records manufactured records at their record factories in Hayes, Middlesex. Originally, the plant was located on Blyth Road but moved to new premises at Uxbridge Road by July 1972. The 160,000 sq. ft. pressing plant consisted of a pressroom with 112 vinyl presses plus room for 28 more when needed, the sleeve store and sleeving area, as well as a tape duplication plant. The plant is famous for using the unique EMI 1400 presses, which were custom-built in-house and as such are the only presses of their kind in the world.
The plant previously operated as The Gramophone Co. Ltd. until 1 July 1973. It was closed in 2000 and was subsequently acquired by the independent manufacturer Portalspace Records Limited.
Records pressed by EMI Records always feature a runout machine-stamp unique to the EMI 1400 press, with a unique typography (see images for example).
EMI 'in-house' pressings:
For vinyl pressings (7" and LP), the plant used the 9 and 3 o'clock locations for mother and stamper identity respectively (oriented to the matrix). For stampers the company used the 10-digit code "GRAMOPHLTD"; G=1 R=2 A=3 M=4 O=5 P=6 H=7 L=8 T=9 D=0. This was given up by 1981.
The plant also undertook contract pressings for other companies from the late 1960s until 1999. Their clients included Liberty, United Artists Records and Island Records from the late 1960s until the closure of the facilities in 1999. Additionally, between 1988 (when the Polygram UK plant was closed) and 1992 (Polygram switched to other manufacturers), EMI also pressed for PolyGram UK.
The contract pressings never credit EMI Records directly but can be identified by a characteristic runout pattern: -xU-m-n (e.g. -1U-1-7). A record with the following in the runout "LASH 19-A-1U-1-Q2" can be broken down as follows:
"LASH 19" is the catalogue number. "A" is the side identifier. "1U" is the cut number with U identifying the pressing as a contract pressing (i.e. that it was not cut at the EMI-owned Abbey Road Studios) "1-Q2" shows the mother and stamper numbers.
Often, the U is very faint and looks more like a J.
By 1993, the contract pressing runout pattern did not contain the "U" cut or "Q" stamper indicators: -x-m-n (e.g. -1-1-7). As before, a record with the following in the runout "B2B 12001 A-1-1-1" can be broken down as follows:
"B2B 12001" is the catalogue number. "A" is the side identifier. "1-1-1" indicates the cut-mother-stamper numbers respectively.
By April 1982 the runout matrix was combined at 6 o'clock.