Former Liberal Democrat leader Mr Clegg dismissed reports Britain will secure a quick trade deal with America in a bitter rant.
The furious Remainer criticised ideas the UK will be fine once it has secured a trade deal with the US.
Theresa May insisted Britain will keep a special relationship with US President Trump as she plans to travel to America next week.
President Trump reiterated he would like to completed a speedy trade deal with Britain as it prepares to leave the European Union.
Nick Clegg bashed Theresa May's plan to secure a US trade deal after proposed single market exi
However, the 50-year-old Lib Dem politician claimed even if we sign a fast trade deal with the US, it will still be no where near what we are losing by leaving the single market.
Speaking on the Andrew Marr Show, he said: “This week lots of people saying, ‘Oh isn’t it great we’re going to have this new trade agreement with America’. No trade agreement with America, no matter how ambitious, can replace or match what we are potentially going to lose on our own doorstep in Europe.
“If you double the trade with America, with Canada, with New Zealand with Australia and India, double trade with all those huge countries, you still would not trade as much as we do with our nearest neighbours in the European Union.
“The reason for that is because geography still counts. Countries tend to trade most, in goods at least, with countries nearest too them.”
Donald Trump insisted that he wanted to strike a free trade deal with the UK quickly
No trade agreement with America, no matter how ambitious, can replace Europe
On Tuesday the Prime Minister announced her Brexit plan in which she confirmed that the UK would be leaving the single market when it leaves the European Union.
Mrs May said that Britain will continue to strike a deal with the European Union after the UK has left.
The Prime Minister said: “As a priority we will pursue a bold and ambitious free trade agreement with the European Union. This agreement should allow for the freest possible trade in goods and services between Britain and the EU’s member states.
“But I want to be clear, what I am proposing can not mean membership of the single market”.
Theresa May's 12 point Brexit plan
Mon, January 16, 2017
It's finally here!
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Continued cooperation with the EU to tackle terrorism and international crime.
The former Deputy Prime Minister, Mr Clegg, said that the Conservative government will soon face struggles with their stance as Britain plans the leave the EU.
He said: “This is now very early days this is the easy bit where the government sets out its stall, what will now happen is there will be a collision.
“In my opinion possibly quite a painful collision with reality, with negotiating with 27 governments and parliaments and also a collision with the contradiction of the governments own position.
“You can’t for instance on the one hand espouse free trade and then yank yourself out of the world’s most successful free trading area, the single market.”