"They don't want a half-hearted Brexit", he wrote.
Trade minister Liam Fox, an arch eurosceptic, insisted that the prime minister was still prepared to walk away from the talks if no satisfactory deal was reached.
Speaking on BBC radio Jurgen Maier, head of German manufacturer Siemens in Britain, said slogans about Brexit were "incredibly unhelpful".
The leaders of both Britain's Conservatives and the opposition Labour Party oppose holding another Brexit referendum, though many members of both parties disagree. "I think our negotiating partners would not be wise if they thought our PM was bluffing".
Zimbabwe President, Mnangagwa survives explosion
He said he was awaiting further information about the blast but added those responsible must have come from "outside Bulawayo". Zanu-PF is led by Mnangagwa, a former vice-president known as "the Crocodile", who took power when Mugabe was ousted.
Research by the Centre for European Reform (CER) think tank indicated Brexit had already made the United Kingdom economy 2.1% weaker than it would have been if voters had chose to stay in the EU - equivalent to around £23 billion a year.
A non-profit coalition called the People's Vote has been lobbying to government for more transparency on the negotiations. "The best option is leaving with a good deal but you've got to be able to walk away from the table", he said.
"We didn't know that we're going to get president Trump or we're going to destroy the trading system on which Brexit depends".
Upwards of 100,000 people marched through the capital to tell the government "we want a People's Vote" on you Brexit deal. "The British people deserve a lot more than a no deal Brexit". "They don't want some sort of hopeless compromise, some perpetual pushme-pullyou arrangement in which we stay half in and half out in a political no mans land - with no more ministers round the table in Brussels and yet forced to obey European Union laws".
Emily Hill, 55, told AFP she was "very much in favour of letting the people" confirm they really want Brexit.
Apple reportedly eyes September for AirPower wireless charger
Eventually, the company hopes to remove all ports and buttons on the iPhone, according to people familiar with the company's work. The device was slated to be released in June 2018, but it will now likely be released either before or in September of this year.
Those behind the protest, People's Vote, are aiming to put pressure on Theresa May and the Government saying Brexit is "not a done deal" and people must "make their voices heard".
Marchers will descend on Parliament Square, where speakers will include Liberal Democrat leader Sir Vince Cable, Tory former minister Anna Soubry, Labour's David Lammy and Green co-leader Caroline Lucas.
"Brexit is not a done deal, not inevitable, Brexit can be reversed", said Cable.
Britain had voted for "the freedom to bust out of the corsets of EU regulation and rules" he said, and any softening of the final deal - such as continued membership of the single market and customs union - would be unwelcome.
Saturday marks two years since a June 23, 2016 referendum resulted in a decision to quit the 28-nation EU.
Instagram steps up to compete with long-form video sharing sites
However, larger accounts and verified accounts can upload videos up to 5.4GB in size and 60 minutes in length from a computer. Younger audiences are apparently spending more time watching amateur content creators in place of professionals.