Several of the databases will help you research a company. Available data includes downloadable financials, share prices, Company profiles and SWOT analyses.
In the UK there is a network of Business and IP Centres in major cities, with the largest one based at the British Library in London. Most should provide access to some company databases. See the Industry Research tab for additional information, or the using other libraries tab.
Glass.ai
Glass.ai is a UK startup with Artificial Intelligence technology that is digitally mapping the world's economy. The company's founders include LBS and UCL alumni. The current Beta tracks any topic of interest across billions of web pages, watching over millions of UK and US organisations. Users can register for free (as this is an external company we advise you check their privacy statement before you do this), enter an area of interest, and quickly see which companies match their criteria. You can try the Beta version at https://research.glass.ai/.