LONDON (Reuters) - Prime Minister Theresa May and Labour are yet to agree whether a customs union or confirmatory public vote would be part of a compromise deal to win the opposition party’s support for a Brexit deal, the Telegraph’s deputy political editor reported.

May’s de facto deputy David Lidington is due to send a letter to Labour shortly setting out May’s Brexit offer, Steven Swinford said on Twitter, adding that while agreement had been reached on workers’ rights, discussions were still ongoing on a customs union or equivalent and a confirmatory vote.