Some up to date info here..
http://www.telegraph.co.uk/money/
Have copied and pasted some selected info from www.thisismoney.co.uk which may help...
Here's some basic questions to ask about a company you're interested in:
Is it in a sector you think will do well? What are your reasons for thinking this?
Does the company offer something unique, or are there many competitors in the same field?
What kind of track record does the company have to date?
Is the company growing? (Look at its year-on-year performance figures)
How much cash does it have in the bank?
If it is not yet in profit, is it at least increasing its revenues in a healthy way?
Is it showing growth in the dividends it pays out?
How highly valued is it? (The price-earnings ratio is one measure of this - see earlier explanation). Is this based largely on future expectations or on past performance?
How volatile is the share price? (Study its share price charts over different periods)
How is the company viewed by City analysts, the press and other commentators?
Is it considered to be a high-growth, high-risk sort of company, or stable and slow-growing?
Price-to-earnings ratios
The primary tool is to compare a company's share price with its earnings, known as the price to earnings ratio or p/e. This is done by dividing a company's price with its earnings per share (EPS). Cheaper companies have lower p/e ratios.
However, p/e ratios should be compared only within sectors because some areas of the stock market are more expensive than others with good reason. For instance, a technology company may enjoy a rating of 70 because of its future earning potential but a more mundane utility with little growth opportunities might have a rating of just 10. That does not necessarily m