Thailand's justice minister Chaikasem Nitisiri said the army had not consulted the cabinet on their decision to impose martial law, but appeared to play down the move, saying it was "only taking over security" and it would not affect the cabinet.
Protest leader Jatuporn Prompan said his group would accept the imposition of martial law, but "won't tolerate a coup or other non-constitutional means" to grab power.
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German Chancellor Angela Merkel said in return the EU would speed up visa-free travel for Turks and its efforts to join the 28-nation bloc.
Colonel Richard Kemp told ITV News Britain must send in ground troops to have any chance of stopping the terror group.
Severe gales will gradually ease across the country but a wet night in the south of England and Wales and icy stretches in Scotland.