By Carla Mozee, MarketWatch

U.K. stocks were lower Tuesday, with London's benchmark on track to break its longest winning streak in two months.

The FTSE 100 was down 0.4% at 7,003.94, with losses in all but the basic services group. Even within that group, mining stocks were mixed. Rio Tinto PLC shares rose 0.5%, but Randgold Resources Ltd. was down 0.9%.

U.K. stocks were losing ground alongside other European markets as investors returned from Monday's holiday. Greece was back in focus, after the country's interior minister said over the weekend that Athens doesn't have the money to make its June repayment to the International Monetary Fund.

Among the few advancers on the benchmark Tuesday was Easyjet PLC , higher by 0.9%, riding up alongside a rally in Ryanair Holdings PLC following robust financial results from the budget airline.

A decline on the FTSE 100 Tuesday would mark the index's first loss in six sessions. It notched a six-session win streak in mid-March.

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