No-one is thought to have been injured, but the fire service said with the size of the fire it was "standard procedure" to have ambulances in attendance.

BBC: Massive gorse blaze near Okehampton

Gas Natural is half the size of Endesa and stretched its financial fire-power to the limit with last year's bid.

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In fact, there are plenty of phones with screens that are dangerously close in size to the growing breed of smaller tablets such as the Kindle Fire, Nexus 7 and iPad Mini.

CNN: iPhone under assault from big-screen rivals