It is the first of two transfer deadlines for Premier League and English Football League clubs at 23:00 BST on Monday.
It is the final date for international signings or moves between Premier League clubs.
However, English Football League clubs can still sign domestic players, and Premier League teams can sign EFL players, until 17:00 on Friday, 16 October.
The transfer window in Scotland closes at midnight on 5 October.
- Follow transfer deadline day live
The deadline in Europe’s other top leagues – Bundesliga, La Liga, Ligue 1 and Serie A – are all on Monday too. That is the date European football’s governing body, Uefa, asked leagues to close their window by.
Players have to be registered for the Champions League and Europa League by 6 October.
For all of the latest rumours, check out today’s gossip column and for a full list of the September transfers visit this page.
5 October – transfer deadline day
All times BST
Premier League
21:57 Edinson Cavani [Unattached – Man Utd] Free
18:06 Alex Telles [Porto – Man Utd] £13.6m
09:02 Ben Godfrey [Norwich – Everton] £25m
Scottish Premiership
21:22 Diego Laxalt [AC Milan – Celtic] Loan
20:59 Marc McNulty [Reading – Dundee United] Loan
19:39 Guy Melamed [Maccabi Natanya – St Johnstone] Free
16:47 Greig Leigh [NAC Breda – Aberdeen] Free
15:15 Kyle Magennis [St Mirren – Hibernian] Undisclosed
13:00 Charlie Lakin [Birmingham – Ross County] Loan
12:16 Josh Mullin [Ross County – Livingston] Free
English Football League
21:00 Josh Knight [Leicester – Wycombe] Loan
20:30 Riley McGree [Charlotte FC – Birmingham] Loan
20:30 Chris Willock [Benfica – QPR] Undisclosed
18:30 Tomas Esteves [Porto – Reading] Loan
18:00 Chris Taylor [Bradford – Barrow] Free
17:30 Albert Adomah [Nottingham Forest – QPR] Free
17:04 Jack Aitchison [Celtic – Barnsley] Free
15:00 Daniel Ballard [Arsenal – Blackpool] Loan
11:00 Matt Millar [Newcastle Jets – Shrewsbury] Loan
10:30 Jan Zamburek [Brentford – Shrewsbury] Loan
10:00 Ashley Nathaniel-George [Crawley – Southend] Undisclosed
International
21:30 Marcel Ritzmaier [Barnsley – Rapid Vienna] Loan
21:30 Gerard Deulofeu [Watford – Udinese] Loan
21:10 Sofiane Boufal [Southampton – Angiers] Loan
21:01 Wesley Hoedt [Southampton – Lazio] Loan
20:40 Nuno Da Costa [Nottingham Forest – Royal Excel Mouscron] Loan
20:30 Jerome Sinclair [Watford – CSKA Sofia] Loan
20:30 Adalberto Penaranda [Watford – CSKA Sofia] Loan
20:29 Chris Smalling [Man Utd – Roma] £13.6m
20:00 Josh Cullen [West Ham – Anderlecht] Undisclosed
19:33 Michael Cuisance [Bayern Munich – Marseille] Loan
19:32 Rachid Ghezzal [Leicester – Besiktas] Loan
19:30 Xande Silva [West Ham – Aris Thesolonika] Loan
18:25 Federico Chiesa [Fiorentina – Juventus] Loan
18:16 Tiemoue Bakayoko [Chelsea – Napoli] Loan
17:30 Matteo Guendouzi [Arsenal – Hertha Berlin] Loan
17:16 Guido Carrillo [Southampton – Elche] Free
16:31 Ruben Vinagre [Wolves – Olympiakos] Loan
15:55 Ignacio Pussetto [Watford – Udinese] Loan
15:19 Douglas Costa [Juventus – Bayern Munich] Loan
14:48 Eric Maxim Choupo-Moting [Paris St-Germain – Bayern Munich] Free
14:00 Kristoffer Peterson [Swansea – Fortuna Dusseldorf] Undisclosed
10:31 Matteo Darmian [Parma – Inter Milan] Loan
10:00 Ryan Sessegnon [Tottenham – Hoffenheim] Loan
4 October
Premier League
Rayan Ait-Nouri [Angers – Wolves] Loan
Ibrahima Diallo [Brest – Southampton] Undisclosed
International
Diogo Dalot [Manchester United – AC Milan] Loan
Scottish Premiership
Jeandro Fuchs [Alaves – Dundee United] Undisclosed
English Football League
Juan Foyth [Tottenham – Villarreal] Loan
Moise Kean [Everton – Paris St-Germain] Loan
Alfa Semedo [Benfica – Reading] Loan
3 October
English Football League
Vitaly Janelt [VfL Bochum – Brentford] Undisclosed
Calvin Miller [Celtic – Harrogate Town] Free
International
Adrien Silva [Leicester – Sampdoria] Undisclosed
Tiago Silva [Nottingham Forest – Olympiakos] Undisclosed
2 October
Premier League
Carlos Vinicius [Benfica – Tottenham] Loan
Rhian Brewster [Liverpool – Sheffield United] £23.5m
Vladimir Coufal [Slavia Prague – West Ham] £5.4m
Wesley Fofana [Saint-Etienne – Leicester] Undisclosed
Scottish Premiership
Devante Cole [Doncaster – Motherwell] Free
Jermain Hylton [Motherwell – Ross County] Free
English Football League
Dylan Bahamboula [Unattached – Oldham]
Dan Barlaser [Newcastle – Rotherham] Undisclosed
Keanan Bennetts [Borussia Moenchengladbach – Ipswich] Loan
Macauley Bonne [Charlton – QPR] Undisclosed
Tyrese Fornah [Nottingham Forest – Plymouth] Loan
Connor Malley [Middlesbrough – Carlisle] Loan
Danny Rose [Mansfield – Northampton] Undisclosed
Jon Russell [Chelsea – Accrington] Loan
International
Niclas Eliasson [Bristol City – Nimes] Undisclosed
Luis Suarez [Watford – Granada] £10m
1 October
English Football League
Jordan Gabriel [Nottingham Forest – Blackpool] Loan
Emil Riis Jakobsen [Randers FC – Preston] Undisclosed
Marcus Maddison [Peterborough – Charlton] Free
Rodrigo Riquelme [Atletico Madrid – Bournemouth] Loan
Jake Taylor [Nottingham Forest – Scunthorpe] Loan
Yoan Zouma [Bolton – Barrow] Free
International
Sergino Dest [Ajax – Barcelona] £19m
The page covers signings by Premier League, English Football League, Scottish Premiership and Women’s Super League clubs along with selected deals from overseas.