Guinness

In November 1960 it was bought by Arthur Guinness Son and Company in a joint-venture with Philips-Duphar (part of Philips Electrical Industries) of the Netherlands, who owned 40%. In April 1969 Guinness acquired the rest of Crookes Laboratories.

There were two main divisions

• Crookes Laboratories Group
• Crookes Anestan – toiletries

Both companies were profitable. Crookes Veterinary began in September 1969. Although veterinary products had formed part of the products range well before this date; E.g. Vivomin a food supplement for animals.

Boots

Boots of Nottingham agreed to buy the two divisions of the company on 26 July 1971 for around £2 million. At this point its turnover was around £700,000 a year.^[1]

The Crookes Veterinary Ltd division was sold to Anglian Food Group for £260,000. This company moved to central Birmingham and was wound up around 1997.

By the early 1980s Boots had amalgamated its most common household medical products into its Crookes Products division, which is much the form that the company retains today. In the 1980s its main competitor was the Beecham Group for OTC medicines, and with Warner-Lambert the three had about half of the market. In October 1987 it claimed to be Britain's leading manufacturer of OTC medicines.

In February 1983, Boots bought Optrex Ltd. (which had been bought by Hoechst AG in 1976) for around £10 million; Optrex had been based at 17 Wadsworth Road in Perivale from the 1930s. In October 1990, it bought Mycil from Medeva plc (who were bought by Celltech in November 1999).

Under Boots, the main money-spinner of the Crookes Products division was Nurofen (Ibuprofen or Brufen), which Boots had patented in 1962, developed by Stewart Adams (chemist) and launched on 8 August 1983. By the late 1980s, Nurofen had a 12% share of the analgesics market. Gold Greenlees Trott (GGT), who later bought BBDP then were bought by Omnicom Group in 1998 and made part of TBWA Worldwide, were commissioned to make an advert to markedly increase Nurofen's market share. Analgesics are mainly purchased by 25- to 40-year-old women. The 30-second TV advert, launched on 3 May 1989, used the voice instrumental section by Clare Torry (for which she was originally paid £150) of The Great Gig in the Sky. It was the first time that an analgesic brand had been advertised in such fashion, and the first time that music from Pink Floyd had been used in TV advertising; they only agreed after seeing the produced advert.

From 2000 to 2006 it also made Clearasil, the skin-care product.

Reckitt Benckiser

Reckitt Benckiser bought Boots Healthcare International (BHI) for £1.9 billion in 2005, which required regulatory approval in early 2006.

Discontinued products

The household-name products it no longer makes are:

• Mycil Cream
• Mycil Powder
• Karvol