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May 30 (Reuters) -Britain's FTSE 100 opened near a one-month low on Thursday, mirroring weakness in Asian bourses as investors await key U.S. inflation data on Friday, while Anglo American added to losses.

The blue-chip FTSE 100 index .FTSE slipped 0.2% by 7:12 GMT, extending its losing streak to the seventh straight session, while the mid-cap FTSE 250 .FTMC edged 0.1% higher.

Investors are on guard as they await U.S. Federal Reserve's preferred inflation gauge, the personal consumption expenditures (PCE) price index data, on Friday for clues on the future path of monetary policy.

A speech by Bank of England Governor Andrew Bailey due later in the day will also be closely watched as the central bank will meet in three weeks to decide Britain's next monetary policy action.

Anglo American AAL.L dropped 2.3% after BHP Group BHP.AX walked away from its $49 billion takeover pursuit. BHP's London-listed shares BHPB.L slipped 1.4%.

Severn Trent SVT.L fell 2.7% as it traded without entitlement to its latest dividend payout.

Auto Trader Group AUTOA.L soared 8.5% and was the top gainer on the FTSE 100 as the online car marketplace firm beat full-year profit estimates.

Boot maker Dr Martens DOCS.L led gains on the mid-cap index with a 5.0% jump after its new CFO lays out cost-savings plan.

Reporting by Pranav Kashyap in Bengaluru; Editing by Varun H K

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