Turkmenistan says interested in selling gas to UK

* Turkmenistan sees Nabucco as a way of diversifying exports

* President tells Prince Andrew keen to work with UK on gas

ASHGABAT, July 28 (Reuters) - Turkmenistan, looking for alternative markets for its energy following a row with Russia, promised Britain on Tuesday to supply it with gas once a planned EU-backed pipeline connects its Caspian deposits with Europe.

Russia, which used to buy most of Turkmenistan's output, stopped importing its gas in April as it sought to renegotiate supply terms due to a fall in energy demand.

Central Asia's biggest gas producer, Turkmenistan now sees Nabucco, a pipeline designed to ease Europe's dependence on gas from Russia, as a way of diversifying exports.

Addressing Prince Andrew, Britain's special representative for international trade and investment, President Kurbanguly Berdymukhamedov said his nation was keen to work closer with Britain on gas supplies.

"As for the prospects of supplying Turkmen natural gas to the European market, including that of Britain, this is completely in line with Turkmenistan's plans to diversify its energy exports," the official Neutral Turkmenistan newspaper quoted him as telling Prince Andrew.

The planned Nabucco pipeline will terminate in Austria, from where gas could be shipped to Britain using existing pipelines.