Watch: After Brexit, Nigel Farage says £ 350 million saved from EU won't be used for NHS

Nigel Farage, the leader of the UKIP party and one of the most vocal Leave campaigners admitted that it was a ‘mistake’ to promise that £350million a week would be spent on the NHS instead. He told ITV’s Good Morning Britain, that he couldn’t guarantee that the money would be used for the NHS. He said: “No I can’t, I would never have made that claim. That was one of the mistakes made by the Leave campaign.”

He also told Radio 4: “It's been a huge exercise in democracy. The first time I appeared on this programme was 17 years ago and we were considered a joke party, with a manifesto for the mad and bad. Now 17 million people have voted for us and I couldn't be more delighted." Farage’s comments came along with Brexit--supporting Conservative MEP suggested that the campaigners hadn’t promised to ‘pull up the drawbridge’ and warned that migration to the UK would continue despite the vote.

WATCH: @Nigel_Farage tells @susannareid100 it was a 'mistake' for Leave to claim there'd be £350M a week for NHShttps://t.co/JNkl5k8IlK

— Good Morning Britain (@GMB) June 24, 2016

Leave campaigner and former London Mayor Boris Johnson with a banner promising to use money for NHS

German Foreign Minister Frank-Walter Steinmeier said he regretted Britain's decision to leave the EU, calling it a "sad day for Europe". "The early morning news from #GreatBritain are truly sobering. It looks like a sad day for #Europe +the #UnitedKingdom," Steinmeier wrote on Twitter.

EU Parliament President Martin Schulz said he would speak with German Chancellor Angela Merkel "on how we can avoid a chain reaction" of other EU states following. "The chain reaction that is being celebrated everywhere now by euroskeptics won't happen," he said.

The EU was the biggest single market in the world and "Great Britain has just cut its ties with that market," Schulz said. "That'll have consequences and I don't believe other countries will be encouraged to follow that dangerous path." "I am not shocked," he said of the results of the British referendum, adding: "We were prepared." 

With inputs from Reuters