- UK stocks opened stronger on Tuesday after the Turkish lira recovered some of its steep losses, though the health of the world's 17th-largest economy remained uncertain.

At 0856, the benchmark FTSE 100 index was up 15.47 points, or 0.2%, at 7.657.92.

Barclays, Lloyds and HSBC rose 0.3%, 0.1% and 0.4%, respectively.

Chile-focused copper miner Antofagasta dropped 4.9% after it slashed its dividend by more than a third, as higher costs and lower production sent its first-half profits south.

Royal Mail said it would appeal a £50m fine, imposed by UK regulators over a pricing change it made in 2014. Investors brushed off the bad news, sending the company's shares up 0.5%.

Motor and home insurer Esure gained 3.7% amid confirmation that it had accepted a £1.17bn takeover bid from Bain Capital.

Housing support services and aged care provider Mears Group shed 1.4% after it posted a small increase in first-half profit. Margin improvement had offset a slide in revenue that partly owed to lax demand in the wake of the Grenfell tragedy, though Mears said demand was recovering.

Realm Therapeutics plunged 45% after a trial of a treatment for dermatitis showed it did not have the desired effect.

Motif Bio gained 5.7% after the US Food & Drug Administration accepted for filing its new drug application for an antibiotic that treats acute bacterial skin infections.

Polypipe Group, a manufacturer of plastic piping and ventilation systems, rallied 5.8%, despite harsh winter weather sending profits slightly lower. To be sure, revenue rose 5% in the UK when the impact of storms in February and March was excluded from its results.

Car dealer Marshall Motor shed 1.9% after a slump in auto sales sent its profits into reverse.

Airport services group John Menzies swung to a first-half loss after it wrote down the value of its newspaper distribution business, which is currently being sold. Underlying earnings, however, improved and its shares added 0.7%.

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