If you need to contact a UK pharmaceuticial company, including non-UK companies which operate within the UK, you are very likely to be able to find all the details you need on the Electronic Medicines Compendium site.
The companies are listed alphabetically. Link below takes you to the right page to start searching.
I've always found pharmaceutical companies to be very helpful, specifically when contacted about (alleged) supply problems. But a word of warning - your pharmacy may hate you for proving them wrong, when their wholesalers have told them that something "isn't available".
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