Macrae's tin of birdlime was labelled with a large letter K and an indication that tin came from Stockport but with no more clues as to the manufacturer. Macrae got on a train to Stockport and there found a taxi driver who took him to Kay Brothers Ltd.[10] The company's chief chemist was soon working on the problem of a suitable adhesive and within a matter of weeks the problem was solved to Macrae's satisfaction.[11]