David Cameron is "gravely concerned" at reports of Russian military vehicles crossing into Ukraine, his spokesperson said.
After speaking to Ukraine's President Petro Poroshenko, the Prime Minister said Russia must not use its humanitarian aid convoy as a pretext for provocation and asked Russia to "demonstrate willingness to find a peaceful solution to conflict in Ukraine."
More top news
The Bond star paid tribute to Christina Knudsen after her death from cancer aged 47.
Thirteen years later, it's time to reunite with Adam, Pete, Jenny, Karen and David. Here is the first glimpse of the stars back in action.
Former leading amateur jockey JT McNamara has died aged 41