Glaxo Wellcome and SmithKline Beecham in UK’s largest merger February 01 2000 X LinkedIn Email Show more sharing options Copy Link URLCopied! Print X LinkedIn Email January also saw the biggest ever all-UK corporate deal with the announcement that Glaxo Wellcome and SmithKline Beecham intend to merge. Unlock this content. The content you are trying to view is exclusive to our subscribers. To unlock this content: Take a Free Trial or Login