Who has come in? Which players have made a move? A round-up of every deal done on the final day of the January 2019 transfer window...
Check below for a comprehensive list of all the ins and outs from across the English and Scottish leagues, as well as abroad.
Follow our online Transfer Centre for the latest transfer news and gossip.
Premier League
Denis Suarez - Barcelona to Arsenal, loan
Jonny Otto - Atletico Madrid to Wolves, £18m
Ante Palaversa - Hajduk Split to Manchester City, £7m
Antonio Barreca - AS Monaco to Newcastle United, loan
Miguel Almiron - Atlanta United to Newcastle United, £21m
Leandro Bacuna - Reading to Cardiff City, undisclosed
Tudor-Cristian Baluta - Viitorul Constanta to Brighton, undisclosed
Tudor-Cristian Baluta - Brighton to Viitorul Constanta, loan
Jan Mlakar - NK Maribor to Brighton, undisclosed
Danny Williams - Haverfordwest County to Cardiff City, undisclosed
Peter Crouch - Stoke City to Burnley, undisclosed
Youri Tielemans - AS Monaco to Leicester, loan
Harvard Nordtveit - 1899 Hoffenheim to Fulham, loan
Lazar Markovic - Liverpool to Fulham, undisclosed
Michy Batshuayi - Chelsea to Crystal Palace, loan
Sky Bet Championship
Pele - AS Monaco to Nottingham Forest, loan
Philip Heise - Dynamo Dresden to Norwich City, undisclosed
Scott Hogan - Aston Villa to Sheffield United, loan
Tyrone Mings - Bournemouth to Aston Villa, loan
Leo Bonatini - Wolves to Nottingham Forest, loan
James Bree - Aston Villa to Ipswich Town, loan
Sam Vokes - Burnley to Stoke City, undisclosed
Liam Ridgewell (free agent) to Hull City
Willem Tomlinson - Blackburn Rovers - left by mutual consent
Okera Simmonds - Blackburn Rovers - left by mutual consent
Callum Connolly - Everton to Bolton, loan
Jacob Murphy - Newcastle to West Brom, loan
Frederic Guilbert - Caen to Aston Villa, undisclosed
Dominic Iorfa - Wolves to Sheffield Wednesday, undisclosed
Beni Baningime - Everton to Wigan, loan
Andy King, Leicester to Derby, loan
Rolando Aarons - Newcastle United to Sheffield Wednesday, loan
Achraf Lazaar - Newcastle United to Sheffield Wednesday, loan
Stefan Johansen - Fulham to West Brom, loan
Jeff Montero - Swansea to West Brom, loan
Tom Carroll, Swansea to Aston Villa, loan
Joe Ledley - Derby - left by mutual consent
Sky Bet League One
Joe Bunney - Northampton Town to Rochdale, loan
Lloyd Jones - Luton Town to Plymouth, loan
Shane McLoughlin - Ipswich Town to Wimbledon, undisclosed
Lewis Morgan - Celtic to Sunderland, loan
Charlie Owens - QPR to Wycombe, loan
Corey Blackett-Taylor - Aston Villa to Walsall, loan
Jonathan Mitchell - Derby County to Shrewsbury Town, loan
Stefan Payne - Bristol Rovers to Shrewsbury Town, loan
Callum Roberts - Newcastle United to Colchester United, loan
Jack Fitzwater - West Brom to Walsall, loan
Kyle Howkins - West Brom to Port Vale, loan
Abu Ogogo - Coventry City to Bristol Rovers, free
James Vaughan - Wigan to Portsmouth, loan
Graham Burke - Preston North End to Gillingham, loan
Jerome Sinclair - Watford to Oxford United, loan
Jacob Butterfield - Derby County to Bradford City, loan
Jacob Bedeau - Aston Villa to Scunthorpe, free
Ricky Holmes - Sheffield United to Gillingham, loan
Kazaiah Sterling - Tottenham to Sunderland, loan
Graham Burke - Preston to Gillingham, loan
Navid Nasseri - Gillingham - left by mutual consent
Josh Knight - Leicester to Peterborough, loan
Michael Folivi - Watford to Wimbledon, loan
Antony Evans - Everton to Blackpool, loan
Aaron Connolly - Brighton to Luton, loan
Billy Clarke - Charlton to Bradford City, free
Alex Baptiste - QPR to Luton, loan
Charlie Wakefield (free agent) to Coventry
Jason Cummings - Nottingham Forest to Luton Town, loan
David Meyler - Reading to Coventry, loan
Tom Pearce - Leeds to Scunthorpe, loan
Zach Clough - Nottingham Forest to Rochdale, loan
Tyrese Campbell - Stoke to Shrewsbury Town, loan
Josh Parker - Gillingham to Charlton, loan
Ben Turner - Burton Albion - left by mutual consent
Alex Bradley - West Brom to Burton, loan
Jonson Clarke-Harris - Coventry to Bristol Rovers, undisclosed
Tahvon Campbell - Forest Green to Gillingham, loan
Viv Solomon-Otabor - Birmingham to Portsmouth, loan
Sky Bet League Two
Matty Willock - Manchester United to Crawley, loan
James Hesketh - Southampton to MK Dons, loan
Kristian Dennis - Notts County to Grimsby Town, loan
Ilias Chair - QPR to Stevenage, loan
Lee Angol - Shrewsbury to Lincoln, loan
Theo Robinson - Southend to Swindon, loan
Ben Liddle - Middlesbrough to Forest Green, loan
Ben Kennedy - Stevenage to Newport County, loan
Sam Stubbs - Middlesbrough to Notts County, loan
Elijah Adebayo - Fulham to Stevenage, loan
Piero Mingoia - Accrington Stanley - Morecambe, loan
Tristan Abrahams - Norwich City to Yeovil Town, loan
Jordan Gibson - Bradford City to Stevenage, loan
Chris Dagnall - Bury to Tranmere Rovers, free
Jake Doyle-Hayes - Aston Villa to Cambridge United, loan
Hayden Coulson - Middlesbrough to Cambridge United, loan
Donovan Wilson - Wolves to Exeter City, loan
Adebayo Azeez - Cambridge United to Newport County, undisclosed
Stephen Walker - Middlesbrough to MK Dons, loan
Kyle Bennett - Bristol Rovers to Swindon Town, loan
Jordan Rossiter - Rangers to Bury, loan
Calum Dyson - Plymouth Argyle to Stevenage, loan
Shamir Mullings - Maidstone United to Macclesfield Town, undisclosed
Courtney Duffus - Oldham Athletic to Yeovil Town, undisclosed
Olidapo Afoloyan - West Ham United to Oldham Athletic, loan
Ollie Byrne - Blackburn to Stevenage, loan
Cameron McGilp - Birmingham to Swindon Town, undisclosed
Charlie Goode - Scunthorpe to Northampton, loan
Harry McKirdy - Aston Villa to Newport, loan
Paul Anderson - Mansfield Town - left by mutual consent
Toby Edser - Nottingham Forest to Port Vale, loan
Sam Dalby - Leeds to Morecambe, loan
Lee Agnol - Lincoln City to Shrewsbury, loan
Daniel Trickett-Smith - Leek Town to Port Vale, loan
Matt Gilks - Scunthorpe to Lincoln City, free
Leonardo da Silva Lopes - Wigan to Gillingham, loan
Marvin Sordell - Burton to Northampton Town, loan
Michael Doyle - Coventry to Notts County, undisclosed
Scottish Premiership
Hakeem Odoffin - Northampton to Livingston, free
David McMillan - St Johnstone to Hamilton Academical, loan
Ryan McGowan - Bradford City to Dundee, loan
Ethan Robson - Sunderland to Dundee, loan
Cammy Bell - Partick Thistle to St Johnstone, loan
Sofien Moussa - Dundee - left by mutual consent
Sean Goss - QPR to St Johnstone, loan
Maryan Shved - Karpaty Lviv to Celtic, undisclosed
Andrew Gutman (free agent) to Celtic, undisclosed
Manny Perez - North Carolina State University to Celtic, undisclosed
Scott Wright - Aberdeen to Dundee FC, loan
Glen Kamara - Dundee to Rangers, undisclosed
Duckens Nazon, Sint-Truiden to St Mirren, loan
Marc McNulty, Reading to Hibernian, loan
Youssouf Mulumbu - Celtic to Kilmarnock, loan
Jeremy Toljan - Borussia Dortmund to Celtic, loan
Darnell Johnson - Leicester City to Hibernian, loan
Roarie Deacon - Dundee - left by mutual consent
Laurentiu Corbu - Dinamo Bucharest to St Mirren, loan
Gael Bigirimana - Motherwell to Hibernian, free
James Horsfield - Scunthorpe to Dundee, loan
John O'Sullivan - Blackpool to Dundee, loan
Scottish Championship
Peter Pawlett - MK Dons to Dundee United, undisclosed
Osman Sow - MK Dons to Dundee United, undisclosed
Calum Butcher - Mansfield Town to Dundee United, undisclosed
Nicky Cadden - Livingston to Ayr United, loan
Aaron Jarvis - Luton Town to Falkirk, loan
Bruce Anderson - Aberdeen to Dunfermline, loan
Mark Reynolds - Aberdeen to Dundee United, loan
Osman Sow - MK Dons to Dundee United, loan
Nikolay Todorov (free agent) to Falkirk
International
Nico Yennaris - Brentford to Beijing Guoan, undisclosed
Georges-Kevin NKoudou - Tottenham to AS Monaco, loan
Aboubakar Kamara - Fulham to Yeni Malatyaspor, loan
Reece Oxford - West Ham to FC Augsburg, loan
Emile Smith Rowe - Arsenal to RB Leipzig, loan
Cuco Martina - Everton to Feyenoord, loan
Joel Pereira - Manchester United to KV Kortrijk, loan
Ben Wilmot - Watford to Udinese, loan
Wilfred Bony - Swansea to Al Arabi, loan
Anthony Georgiou - Tottenham to Levante, loan
Adrien Silva - Leicester to AS Monaco, loan
Lucas Piazon - Chelsea to Chievo, loan
Erik Pieters - Stoke to Amiens, loan
Pedro Chirivella - Liverpool to Extremadura, loan