London (CNN Business) Brexit has already meant three years of profound uncertainty for companies in the United Kingdom. On Thursday, the reign of confusion was extended by another six months.

The last-minute Brexit delay granted by the European Union removes the immediate threat of a damaging break with the bloc But it also means that some companies will further delay investment decisions.

"Sustained uncertainty is leaving business with its hands tied, reluctant to make everyday decisions on recruitment, expansion, and investment," said Catherine McGuinness, policy chair at the City of London Corporation, which represents the financial industry.

Britain now faces a deadline of October 31 to leave the European Union, its biggest trading partner. The British Chambers of Commerce said enthusiasm among its members for the delay is limited.

"Businesses will be relieved, but their frustration with this seemingly endless political process is palpable," said BCC boss Adam Marshall, who has compared Brexit to setting a car's GPS system for an unknown destination.

A weak housing market, slumping autos production, declining investment and downbeat executives all suggest that continued confusion over Brexit has caused the UK economy to stagnate.

A strong labor market and robust consumer spending haven't been enough to prevent growth from slowing. The UK economy grew 0.3% in the three months to February, a performance boosted by Brexit stockpiling.

Business investment fell 0.9% in the final three months of 2018, marking the first time investment has declined in four consecutive quarters since the global financial crisis. Surveys suggest investment took another hit in the first quarter of this year.

Companies have been forced to spend big on preparations for a disorderly Brexit, which would mean new trade barriers and major delays at border crossings.

Sanofi GCVRZ Novartis NVS Some manufacturers, food suppliers and supermarkets have done the same. Some companies, including the drugmakersand, have been stockpiling treatments in the United Kingdom.Some manufacturers, food suppliers and supermarkets have done the same.

EasyJet ESYJY Tesco TSCDF said last week that continued uncertainty was reducing demand for flights in Europe. The CEO of, Britain's biggest supermarket chain, said Wednesday customers were showing signs of "Brexit fatigue."

"Uncertainty has already caused serious damage — car plants are on enforced shutdown, investment has been cut and jobs lost," said Mike Hawes, CEO of the Society of Motor Manufacturers and Traders. "This cannot go on."

Brexit uncertainty Original deadline: March 29, 2019 First delay: April 12, 2019 New extension: October 31, 2019

The preferred option of some businesses would have been leaving the European Union on the original exit date of March 29 with a deal that ensured a smooth transition and close EU trading relationship in the future.

Some economists think that would have unleashed investment and boosted growth. Instead, the country's economic malaise is likely to continue.

"The current state of uncertainty will continue to have credit negative effects on the UK economy and companies across the business spectrum, holding back investment and spending," analysts at Moody's wrote in a note on Thursday.

Kallum Pickering, a senior economist at Berenberg bank, said the delay is "not good" for the UK economy and noted that the risk of a disorderly Brexit continues to hang over the UK "like a sword."

After the EU granted the Brexit delay, Berenberg cut its growth forecast for the UK economy this year to 1.2% from 1.4%.