LONDON -- The FTSE 100 (INDEX: ^FTSE) had an almost clean sweep of positive sessions this week, before falling back a little on Friday to close at 6,384 points. But it still gained a healthy 135 points over the week, touching a high point of 6,424 on Thursday. And with the top U.K. index having reached a five-year high of 6,534 points on March 12, London is still in a general bullish mood.

Here are four of the biggest-moving FTSE 100 stocks this week.

Marks & Spencer (MKS -1.76%)
High Street department-store chain Marks & Spencer has been going through a touch patch, but an Easter shopping week that was billed as its best ever helped push the stock up 23 pence (6.1%) to reach 400 pence. Group sales for the fourth quarter gained 3.1% year on year, with U.K. sales managing a 2.6% rise. We were also told that "despite the macro-economic issues in some of the legacy markets, our performance in Europe improved in the quarter."

Antofagasta (ANTO -0.62%)
The FTSE's big mining stocks have had a hard few weeks as fears of a slowdown in Chinese demand have been weighing heavily. But positive news from China of lower-than-expected inflation gave them a boost this week, with Antofagasta one of the biggest winners. The copper miner saw its price rise 52 pence (5.4%) to 1,013 pence, but it's still down more than 25% since early January.

Barclays (BARC 1.01%)
The U.K.'s beleaguered banks have been recovering pretty well since the middle of last year, with Barclays leading the way this week by perking up 19 pence (6.9%) to finish Friday at 299 pence. The price is still down a little from the 52-week high of 330 pence set in early February, but it has still more than doubled from last July's 12-month low point of 148 pence.

Evraz (EVR)
Evraz was the biggest loser in the FTSE 100 this week, dropping 10.5 pence (5.5%) to 183 pence after declaring a full-year loss and scrapping its final dividend. The Russia-based steelmaker, part-owned by Chelsea soccer owner Roman Abramovich, was hit by falling steel prices and weak markets and turned in a $106 million pre-tax loss for the year to December 2012 -- after enjoying a profit of $873 million the previous year.

What now?
Dividends form a core part of many a successful long-term portfolio. Whether you need that income to live on or want to reinvest it for the long term, there's nothing wrong with collecting robust and attractive payouts. And that's what the Fool's top U.K. analysts have been looking for.

In fact, they have uncovered a stock offering a yield of 5.7% which they have declared their "Top Income Stock for 2013." The full in-depth report is free and can be accessed immediately -- just click here.

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: