Britain's FTSE outperforms Europe, helped by mining sector strength

* Mining shares among top gainers

* Experian (Other OTC: EXPGF - news) falls after update (ADVISORY - Reuters plans to replace intra-day European and UK stock market reports with a Live Markets blog on Eikon - see cpurl://apps.cp./cms/?pageId=livemarkets for site in development. See the bottom of the report for more details)

By Atul Prakash

LONDON, May 11 (Reuters) - Britain's leading share index edged lower on Wednesday though it outperformed the rest of Europe thanks to a rebound in the mining sector on the back of stronger metal prices.

The FTSE 100 index was down 0.2 percent at 6,144.60 points by 1204 GMT after rising 0.7 percent on Tuesday. The benchmark is down about 1.7 percent this month after three straight months of gains.

Resource-related stocks were in demand, with the UK mining index rising 2.8 percent, the top sectoral gainer, after prices of copper, aluminium and zinc rose by 1-2 percent.

"After the recent sell-off, miners are once again in demand, with stronger metal prices underpinning the sector. However, the sector's outlook still looks grim following lingering concerns about the pace of economic growth in top metals consumer China," said Securequity senior trader Jawaid Afsar said.

Shares (Berlin: DI6.BE - news) in Glencore (Xetra: A1JAGV - news) , Anglo American (LSE: AAL.L - news) and Antofagasta (Other OTC: ANFGF - news) rose between 2.3 and 6.3 percent.

However, banks lost ground after strong gains in the previous session. The UK banking index fell 1 percent, down along with European lenders, with falls in Raiffeisen BANK and Banco Popolare (Amsterdam: PB8.AS - news) dampening sentiment towards financials across Europe.

Among individual movers, Experian fell nearly 1.1 percent after the world's biggest credit data company reported unchanged full-year pretax profit against a backdrop of adverse foreign exchange movements.

Among mid-caps, William Hill (Other OTC: WIMHF - news) slumped 6 percent after a lacklustre update that reaffirmed a difficult trading environment.

Shares hit a 3-1/2 year low, and are down 27 percent since late February, after a profit warning in March.

"Nothing has changed since the profit warning in March ," analysts at UBS (LSE: 0QNR.L - news) said in a note, adding however that some other analysts had yet to downgrade their forecasts for the stock in light of the profit warning.

ADVISORY- Reuters plans to replace intra-day European and UK stock market reports with a Live Markets blog on Eikon (see cpurl://apps.cp./cms/?pageId=livemarkets for site in development). In a real-time, multimedia format from 0600 London time through the 1630 closing bell, it will include the best of our market reporting, Stocks Buzz service, Eikon graphics, Reuters pictures, eye-catching research and market zeitgeist. Breaking news and dramatic market moves will continue to be alerted to all clients and we will continue to provide a short opening story and comprehensive closing reports.

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Mike Dolan, Markets Editor EMEA. (Editing by Mark Heinrich)