LONDON -- The FTSE 100 (INDEX: ^FTSE) slid further this week, falling a further 165 points (2.8%) from last week's close of 5,770 to end on 5,606. The major contributing factor was the news that the eurozone is officially back in recession, having posted two consecutive quarters of contraction.

There were some major ups and downs for individual stocks, too. Here are three with big moves during the week.

ITV (LSE: ITV.L)
Newspaper publisher ITV put on 6.2 pence (7.2%) to end the week at 92 pence, though that was a little down from the 52-week high of 96.3 pence the stock hit on Wednesday. ITV had been plagued with fears of falling advertising revenues during the worst of the economic slump, but the recovery has been strong and investors have enjoyed a five-bagger since 2009.

Melrose (LSE: MRO.L)
FTSE 100 engineering group Melrose crashed by 38.5 pence (16%) to 209 pence after the company, which specializes in buying underperforming businesses and turning them around for resale, hit the market with a shock profit warning on Friday. Because of a slowdown in sales and a weakening order intake, particularly within its energy businesses, the outlook for 2013 is described as uncertain.

Anglo American (LSE: AAL.L)
Anglo American also fell this week, losing 202 pence (12%) to 1,664 pence, in a week in which sentiment turned firmly against the natural resources sector. Anglo American is one of the biggest fallers amongst the FTSE 100 miners this year, having lost 43% from its high point of 2,910 pence set in February. But with forecasts putting the stock on a P/E of 12 for the year to December, falling to less than 10 next year, could this be a good time to buy?

Trinity Mirror (LSE: TNI.L)
Newspaper group Trinity Mirror continued its strong run, putting on another 8.5 pence (12%) to reach 79 pence. The departure of unpopular chief executive Sly Bailey, followed by a recent uprating of the firm's full-year profit guidance coupled with falling debts, have all helped to boost the price threefold since the dark days of July. And forecasts still put the stock on a P/E of only about 3.

What now?
As usual, this week's FTSE trading provided some large share-price movements -- and perhaps some buying opportunities. Indeed, legendary investor Warren Buffett has spent more than $1 billion buying the shares of one of the U.K.'s most successful FTSE large caps.

Clearly he thinks there are bargains to be had within Britain's stock market, and you can discover the details of his investment -- including the price he paid -- by reading this special report. The report -- "The One U.K. Share Warren Buffett Loves" -- is free and can be accessed immediately.

The Motley Fool is helping Britain invest. Better. And with the economy so uncertain, we're urging everyone to read "10 Steps to Making a Million in the Market" -- it may transform your wealth. Click here now to request your free, no-obligation copy.

Further Motley Fool investment opportunities: