The British Prime Minister's office said it was "very likely" a Brexit trade deal would not be secured without significant changes in Brussels' position, after Boris Johnson spoke to EU chief Ursula von der Leyen.
"The Prime Minister underlined that the negotiations were now in a serious situation," Downing Street said.
"Time was very short and it now looked very likely that agreement would not be reached unless the EU position changed substantially."
Ms von der Leyen said on Twitter there had been "substantial progress" during the call, but admitted challenges remain.
Negotiations will continue tomorrow, she said.
Meanwhile, a rush of lorries heading to the UK from France before Brexit has created gridlock at the Channel Tunnel at Calais.
Traders are hurrying to move goods across the border as the trade deal between the UK and the EU hangs in the balance.
The UK is set to leave the EU’s single market on December 31 after the transition period ends.
EU chief negotiator Michel Barnier said “good progress” had been made despite the remaining sticking points.
But European Parliament leaders said they would need to see the text of a deal by Sunday for it to be ratified by the end of the year.
If a deal were not struck by December 31, the UK would have to trade with its largest trading partner on World Trade Organisation rules, with taxes on goods bought and sold between the two sides, possibly inflating prices.
Also a problem are the tailbacks at the border as lorries undergo Customs checks, creating delays.
In a sign of what could be to come, there were more than 5 kilometres of lorries queueing to access the tunnel on Thursday.
Officials have repeatedly warned of difficult weeks ahead, with the Channel the centre of trade between Britain and Europe.
Usually November is the peak month as traders prepare for Christmas, but this year it is December as businesses on both sides stockpile before Britain's exit from the single market.
Problems have also been exacerbated by disruptions to the supply chain, brought on by coronavirus.
"Yesterday (Wednesday) was the all-time record," said Francois Schira, the senior local official in charge of Brexit preparations.
Mr Schira said that on Wednesday, 9,000 heavy goods vehicles had arrived to cross to England, compared with the normal 5,000 to 6,000.
"The traffic is only increasing," he said. "Many heavy goods vehicles could not board yesterday, parked near by and rushed to try to board this morning.
"This immediately created a traffic jam and we could not regulate the influx. This morning the situation is very complex to manage."
Sebastien Rivera, secretary general of the regional road transport federation, estimated there were "between 15 and 20 hours more waiting than usual" for a return trip.
Meanwhile, UK Cabinet Office Minister Michael Gove said the chance of Britain striking a deal before December 31 was “less than 50 per cent”.
Mr Barnier was more upbeat: "Good progress, but the last stumbling blocks remain. We will only sign a deal protecting EU interests and principles."
SPECS
Nissan 370z Nismo
Engine: 3.7-litre V6
Transmission: seven-speed automatic
Power: 363hp
Torque: 560Nm
Price: Dh184,500
Chelsea 2 Burnley 3
Chelsea Morata (69'), Luiz (88')
Burnley Vokes (24', 43'), Ward (39')
Red cards Cahill, Fabregas (Chelsea)
Skoda Superb Specs
Engine: 2-litre TSI petrol
Power: 190hp
Torque: 320Nm
Price: From Dh147,000
Available: Now
Avatar: Fire and Ash
Director: James Cameron
Starring: Sam Worthington, Sigourney Weaver, Zoe Saldana
Rating: 4.5/5
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The five pillars of Islam
General%20Classification
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Who is Tim-Berners Lee?
Sir Tim Berners-Lee was born in London in a household of mathematicians and computer scientists. Both his mother, Mary Lee, and father, Conway, were early computer scientists who worked on the Ferranti 1 - the world's first commercially-available, general purpose digital computer. Sir Tim studied Physics at the University of Oxford and held a series of roles developing code and building software before moving to Switzerland to work for Cern, the European Particle Physics laboratory. He developed the worldwide web code as a side project in 1989 as a global information-sharing system. After releasing the first web code in 1991, Cern made it open and free for all to use. Sir Tim now campaigns for initiatives to make sure the web remains open and accessible to all.
Notable groups (UAE time)
Jordan Spieth, Si Woo Kim, Henrik Stenson (12.47pm)
Justin Thomas, Justin Rose, Louis Oosthuizen (12.58pm)
Hideki Matsuyama, Brooks Koepka, Tommy Fleetwood (1.09pm)
Sergio Garcia, Jason Day, Zach Johnson (4.04pm)
Rickie Fowler, Paul Casey, Adam Scott (4.26pm)
Dustin Johnson, Charl Schwartzel, Rory McIlroy (5.48pm)
The White Lotus: Season three
Creator: Mike White
Starring: Walton Goggins, Jason Isaacs, Natasha Rothwell
Rating: 4.5/5
Read more from Aya Iskandarani
Killing of Qassem Suleimani
Women’s World T20, Asia Qualifier
UAE results
Beat China by 16 runs
Lost to Thailand by 10 wickets
Beat Nepal by five runs
Beat Hong Kong by eight wickets
Beat Malaysia by 34 runs
Standings (P, W, l, NR, points)
1. Thailand 5 4 0 1 9
2. UAE 5 4 1 0 8
3. Nepal 5 2 1 2 6
4. Hong Kong 5 2 2 1 5
5. Malaysia 5 1 4 0 2
6. China 5 0 5 0 0
Final
Thailand v UAE, Monday, 7am
ICC Intercontinental Cup
UAE squad Rohan Mustafa (captain), Chirag Suri, Shaiman Anwar, Rameez Shahzad, Mohammed Usman, Adnan Mufti, Saqlain Haider, Ahmed Raza, Mohammed Naveed, Imran Haider, Qadeer Ahmed, Mohammed Boota, Amir Hayat, Ashfaq Ahmed
Fixtures Nov 29-Dec 2
UAE v Afghanistan, Zayed Cricket Stadium, Abu Dhabi
Hong Kong v Papua New Guinea, Sharjah Cricket Stadium
Ireland v Scotland, Dubai International Stadium
Namibia v Netherlands, ICC Academy, Dubai
NYBL PROFILE
Company name: Nybl
Date started: November 2018
Founder: Noor Alnahhas, Michael LeTan, Hafsa Yazdni, Sufyaan Abdul Haseeb, Waleed Rifaat, Mohammed Shono
Based: Dubai, UAE
Sector: Software Technology / Artificial Intelligence
Initial investment: $500,000
Funding round: Series B (raising $5m)
Partners/Incubators: Dubai Future Accelerators Cohort 4, Dubai Future Accelerators Cohort 6, AI Venture Labs Cohort 1, Microsoft Scale-up
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Bundesliga fixtures
Saturday, May 16 (kick-offs UAE time)
Borussia Dortmund v Schalke (4.30pm)
RB Leipzig v Freiburg (4.30pm)
Hoffenheim v Hertha Berlin (4.30pm)
Fortuna Dusseldorf v Paderborn (4.30pm)
Augsburg v Wolfsburg (4.30pm)
Eintracht Frankfurt v Borussia Monchengladbach (7.30pm)
Sunday, May 17
Cologne v Mainz (4.30pm),
Union Berlin v Bayern Munich (7pm)
Monday, May 18
Werder Bremen v Bayer Leverkusen (9.30pm)
Scores in brief:
Day 1
New Zealand (1st innings) 153 all out (66.3 overs) - Williamson 63, Nicholls 28, Yasir 3-54, Haris 2-11, Abbas 2-13, Hasan 2-38
Pakistan (1st innings) 59-2 (23 overs)
Scoreline
Man Utd 2 Pogba 27', Martial 49'
Everton 1 Sigurdsson 77'
COMPANY PROFILE
Founders: Alhaan Ahmed, Alyina Ahmed and Maximo Tettamanzi
Total funding: Self funded
EXPATS
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The specs
Engine: 2.0-litre 4cyl turbo
Power: 261hp at 5,500rpm
Torque: 405Nm at 1,750-3,500rpm
Transmission: 9-speed auto
Fuel consumption: 6.9L/100km
On sale: Now
Price: From Dh117,059
The Facility’s Versatility
Between the start of the 2020 IPL on September 20, and the end of the Pakistan Super League this coming Thursday, the Zayed Cricket Stadium has had an unprecedented amount of traffic.
Never before has a ground in this country – or perhaps anywhere in the world – had such a volume of major-match cricket.
And yet scoring has remained high, and Abu Dhabi has seen some classic encounters in every format of the game.
October 18, IPL, Kolkata Knight Riders tied with Sunrisers Hyderabad
The two playoff-chasing sides put on 163 apiece, before Kolkata went on to win the Super Over
January 8, ODI, UAE beat Ireland by six wickets
A century by CP Rizwan underpinned one of UAE’s greatest ever wins, as they chased 270 to win with an over to spare
February 6, T10, Northern Warriors beat Delhi Bulls by eight wickets
The final of the T10 was chiefly memorable for a ferocious over of fast bowling from Fidel Edwards to Nicholas Pooran
March 14, Test, Afghanistan beat Zimbabwe by six wickets
Eleven wickets for Rashid Khan, 1,305 runs scored in five days, and a last session finish
June 17, PSL, Islamabad United beat Peshawar Zalmi by 15 runs
Usman Khawaja scored a hundred as Islamabad posted the highest score ever by a Pakistan team in T20 cricket
Villains
Queens of the Stone Age
Matador
The Lowdown
Us
Director: Jordan Peele
Starring: Lupita Nyong'o, Winston Duke, Shahadi Wright Joseqph, Evan Alex and Elisabeth Moss
Rating: 4/5