Downing Street said David Cameron was "disappointed" that Mr Timerman had pulled out of the meeting with Mr Hague and the Falklanders.
The position is that we are not prepared to talk over the heads of the Falkland Islanders about matters that directly affect their status as a British Overseas Territory.
The offer of a meeting still stands. If the Argentines change their minds, the Foreign Secretary would be happy to meet them.
More top news
Authorities say Ai Weiwei failed to disclose a previous "criminal conviction" - though his supporters say he was never even charged.
The supermarket made the change after getting feedback from customers who said they felt under pressure as they finished their shop.
Harry Potter fans have been left sorely disappointed after the slightly misleading hashtag #NewHarryPotterBooks began trending on Twitter.