Failure to secure a Brexit deal risks the UK "trashing its fabulous relationship" with the European Union, the boss of Siemens has warned.
After MPs failed to find a majority on four indicative votes in the House of Commons last night (Monday), Jurgen Maier, UK chief executive of Siemens, told the BBC: "We are at a point of crisis right at this moment in time.
"We need to find a way forward so we can re-establish that trust to give us the confidence to invest here again."
Mr Maier said confidence between the two parties would be rebuilt once a resolution on Brexit is found.
He added: "If I was going to go to my board today and say here is another factory that I want to open for a major infrastructure project in the UK, I can tell you that with this turmoil right now, we would not be putting that over the line.
"I'm saying to our parliament, 'enough is enough' and this is the week where a decision needs to be made.
"I remember this country being the sick man of Europe in 1974 and it has taken us 45 years to create a Britain which is a trusting, reliable trading partner.
"My company, like many others, has invested hundreds of millions in this country over that period."
Before the indicative votes, Mr Maier sent an open letter MPs calling for them to find a majority quickly.
He said: "Brexit is exhausting our business and wrecking the country's tremendous reputation as an economic powerhouse.
"This is your last chance to come together to build a new consensus for Britain and then allow us to move on from Brexit, to the many other issues that need so desperately sorting in our country like our industrial strategy and skills agenda."