* FTSEurofirst 300 down 0.9 pct
* Banks, retailers lead decline
* Record-high oil fans inflation fears
By Amanda Cooper
LONDON, June 27 (Reuters) - European shares staged a broad-based fall on Friday, led by banks and retailers, against a backdrop of deepening concern over the outlook for corporate profitability and fears over inflation.
Banks were once again the worst performing sector in Europe. The DJ Stoxx index of European banks <.SX7P> hit its lowest level in three years, falling 1 percent on concern about bank profitability, as a number of major institutions have bulked up balance sheets that have been ravaged by the credit crunch.
UniCredit <CRDI.MI> fell 2 percent, BNP Paribas <BNPP.PA> fell 2.7 percent and UBS <UBSN.VX> fell 4.1 percent.
French supermarket group Carrefour <CARR.PA> was one of the largest drags on the broader market, with the stock falling nearly 7 percent and extending Thursday's losses, as investors worried about the impact of a slowing economy and high borrowing costs on consumer spending.
Other retailers dropped. Tesco <TSCO.L>, Ahold <AHLN.AS> and Sainsbury <SBRY.L> fell between 2.5 and 3.0 percent.
By 0849 GMT the FTSEurofirst 300 index <
> of top European shares was down 0.6 percent at 1,190,31 points, having earlier hit its lowest level since late October 2005.The European market is on track for its fourth successive weekly decline.
"It is not a matter of companies doing badly," said Justin Urquhart Stewart, investment director at Seven Investment Management.
"They're doing what we thought they would be doing, but analysts still have far too optimistic expectations, which is why you're getting this realignment," he said, of the fall in the broader equity market.
"There is concern over one or two of the banks in continental Europe, you can hear something ticking, but you're not sure what it means and markets aren't going to have any strength."
Shares in France's Natixis <CAGR.PA> lost over 6 percent after the bank said its two controlling shareholders have each granted a 500 million euro advance to the group, while Deutsche Bank <DBKGn.DE> was down nearly 3 percent after Citigroup said in a research note pressure may be growing on Germany's largest bank to raise capital.
OIL REIGNITES INFLATION FEARS
Crude oil futures <CLc1> hitting a record high helped energy stocks but deepened existing fears about the impact of inflation on an already slowing global economy.
Total <TOTF.PA> was up 1.3 percent, while Royal Dutch Shell <RDSa.AS> gained 1.6 percent, BG Group <BG.L> rose 1.9 percent and ENI <ENI.MI> rose 0.7 percent.
"Inflation has been misjudged since the end of last year," said Heino Ruland, a strategist at FrankfurtFinanz.
"Central bankers are worrying about it at rather a late stage, so in order to convince markets that they will be able to combat inflation, they will need to do more than they would otherwise do," he said.
"You're not talking about one hike, you're talking about three hikes and they're happening sooner rather than later," he said, referring to the European Central Bank, which meets next week to discuss policy and may raise rates.
The twin forces of inflation and the fallout from the credit crunch have hit European shares this year. The FTSEurofirst 300 is down 21 percent so far in 2008 and in on track for its worst June on record, with a 11 percent decline.
Among other stocks on the move was Belgian pharmaceutical group UCB <UCB.BR>, which rose 3.7 percent after saying it would launch its new epilepsy drug Vimpat in the autumn after gaining approval from the European Medicines Agency this week.
Later in the day, investors will look out for U.S. data on consumer inflation, as reflected by the core PCE index, at 1230 GMT, as well as a final read of June consumer sentiment at 1355 GMT. (Editing by David Cowell)