Nigel Farage has celebrated the triggering of Article 50 by going to the pub for a pint.
The former UKIP leader said it was a "big day" and he was having a "minor celebration".
He added: "Every day is a sad day in the European Union because every single day that goes by opposition to the project grows amongst all 28 member states.
"The European Union may have been a good idea 60 years ago. It doesn't work anymore."
The triggering of Article 50 has dominated newspaper headlines on Thursday, with many focusing on a possible threat over security by Ms May.
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Nine months on, Stratford - where the referendum vote was 52:48 - remains as divided as ever over whether leaving the EU is a good idea.