In cases where the head chef doesn't have a personal Twitter account I have mentioned the restaurant or hotel account, if available. I do realise of course that a list like this can never be complete and that it is outdated almost as soon as it is published. So please feel free to leave a comment if there are any updates.
British and Irish Michelin starred chefs/restaurants on Twitter:
Alain Ducasse at The Dorchester in London:
Jocelyn Herland @TheDorchester
Gordon Ramsay Royal Hospital Road in London:
Gordon Ramsay / Clare Smyth @GordonRamsay01 and @restaurant_gr
Michel Roux sr @MichelRouxOBE and Alain Roux @ChefAlainRoux and @RouxWaterside
England
Le Champignon Sauvage in Cheltenham:
David Everitt-Matthias @Lechampsauvage
l'Enclume in Cartmel:
Simon Rogan @simon_rogan and @lenclume
Gidleigh Park in Chagford:
Michael Caines @michaelcaines and @Gidleighhotel
Hand and Flowers in Marlow:
David Everitt-Matthias @Lechampsauvage
l'Enclume in Cartmel:
Simon Rogan @simon_rogan and @lenclume
Gidleigh Park in Chagford:
Michael Caines @michaelcaines and @Gidleighhotel
Hand and Flowers in Marlow:
Tom Kerridge @ChefTomKerridge and @HandFMarlow
Le Manoir aux Quat'Saisons in Great Milton:
Raymond Blanc @raymond_blanc and Gary Jones @chefgaryjones and @lemanoir
Restaurant Nathan Outlaw in Port Isaac:
Nathan Outlaw @Nathanoutlaw and @resNathanOutlaw
Restaurant Sat Bains in Nottingham:
Sat Bains @Satbains1
Whatley Manor (The Dining Room) in Malmesbury:
Martin Burge @ChefMartinBurge and @Whatley_Manor
Scotland
Andrew Fairlie at Geleneagles in Auchterarder:
Andrew Fairlie @AndrewFairlie1 and @Gleneagleshotel
Republic of Ireland
Restaurant Patrick Guilbaud:
Patrick Guilbaud @RPGuilbaud and Kieran Glennon @kieranglennon
London
The Araki:
Mitsuhiro Araki (currently not on Twitter)
Helene Darroze at The Connaught:
Helene Darroze @HeleneDarroze and @TheConnaught
Dinner by Heston Blumenthal:
Ashley Palmer-Watts @APWChef and @MO_LONDON
Le Gavroche:
Michel Roux jr @michelrouxjr
The Greenhouse:
Arnaud Bignon @ArnaudBignon1
Hibiscus:
Claude Bosi @claudebosi and @HibiscusLondon
The Ledbury:
Brett Graham (currently not on Twitter)
Marcus:
Marcus Wareing @MarcusWareing and @TheBerkeley
Sketch (The Lecture Room & Library):
Pierre Gagnaire/Jean-Denis le Bras/Roel Lintermans @sketchlondon
The Square:
Philip Howard @philiphoward8 and @square_rest
Umu:
Yoshinori Ishii @UmuRestaurant
England
Adam's in Birmingham:
Adam Stokes @AdamStokesChef and @RestaurantAdams
Alimentum in Cambridge:
Mark Poynton @markjpoynton and @alimentum1
Bath Priory in Bath:
Michael Caines @michaelcaines and Sam Moody @thegoodmoody and @thebathpriory
The Black Rat in Winchester:
Ollie Moore @olliemoore111 and @the_black_rat
Black Swan in Oldstead:
Tommy Banks @TommyBanks8 and @blkswanoldstead
Bohemia Restaurant in Jersey:
Steve Smith @steve01smith
The Box Tree in Ilkley:
Simon Gueller @gueller_s and @BoxTreeIlkley
Butchers Arms in Eldersfield:
James Winter (currently not on Twitter)
Bybrook (Manor House Hotel and Golf Club) in Castle Combe:
Richard Davies @davies_chef and @themanorhouse
Carters of Mosely in Birmingham:
Brad Carter @ChefBradCarter and @cartersmosely
Casamia in Bristol:
Jonray Sanchez @jonraysanchez and Peter Sanchez @Peter_sanchez_ and @Casamia_
Sir Charles Napier in Chinnor:
Anthony Skeats @skeatsieeee and @SirCNapier
The Cross at Kenilworth in Kenilworth:
Adam Bennett @chefadam_1 and @TheCrossKen
Drake's in Ripley:
Steve Drake @stevedrakefood
Driftwood in Portscatho:
Chris Eden @chrisedendrifty and @DriftwoodHotel
Fisher's at Baslow Hall in Baslow:
Rupert Rowley @rupertchef and @FischersBaslow
Fraiche restaurant in Birkenhead:
Marc Wilkinson @marcatfraiche
Gravetye Manor in East Grinstead:
George Blogg @GeorgeBlogg and @GravetyeMano
Hambleton Hall in Oakham:
Aaron Patterson @Chef_Patterson and @Hambleton_Hall
Harrow at Little Bedwyn in Little Bedwyn:
Roger Jones @littlebedwyn
Hinds Head in Bray-on-Thames:
János Veres @HindsHeadBray
House of Tides in Newcastle upon Tyne:
Kenny Atkinson @KennyAtkinson1 and @houseoftides
John's House in Loughborough:
John Duffin @JohnsHouseRest
JSW in Petersfield:
Jake Watkins (currently not on Twitter)
Lords of the Manor in Upper Slaughter:
Richard Edwards @chefrichardedwa and @CotswoldLords
The Man Behind the Curtain in Leeds:
Michael O'Hare @hairmetalchef
The Masons Arms in Knowstone:
Mark Dodson @markdodsonchef and @masonsknowstone
Morston Hall in Morston:
Galton Blackiston @ChefGalton and @Morston_Hall
The Neptune in Hunstanton:
Kevin Mangeolles @Neptunechef
Northcote in Langho:
Nigel Haworth @NigelHaworth and @NorthcoteUK and Lisa Allen @_LisaAllen
The Nut Tree Inn in Murcott:
Mike North @Nuttreeinn
Ocean Restaurant in Jersey:
Mark Jordan @_markjordan
Ockenden Manor in Cuckfield:
Stephen Crane @HS_Hotels
l'Ortolan in Reading:
Alan Murchison @AlanMurchison and @lortolan
Ormer by Shaun Rankin in Jersey:
Shaun Rankin @ShaunRankin and @OrmerJersey
Outlaw's Fish Kitchen in Port Isaac:
Paul Ripley @ChefPaulRipley and @Fish_Kitchen
The Park (Lucknam Park Hotel) in Bath:
Hywel Jones @HywelJonesLP and @lucknampark
Paris House in Woburn:
Phil Fanning @ParisHouseChef and @ParisHouse10in8
The Pass in Horsham:
Matt Gillan @MattGillan and @PassRestaurant
Paul Ainsworth at No. 6 in Padstow:
Paul Ainsworth @PaulAinsw6rth and @no6padstow
The Pipe & Glass Inn in Beverly:
James Mackenzie @pipeandglass
Pony & Trap in Chew Magna:
Josh Eggleton @josh_eggleton and @theponyandtrap
Purnell's in Birmingham:
Glynn Purnell @yummy_brummie
Raby Hunt in Darlington:
James Close @rabyhunt and @therabyhunt
Red Lion Freehouse in East Chisenbury:
Guy Manning @redlionfreehse
The Room in the Elephant in Torquay:
Simon Hulstone @Hulstone and @elephantrest
The Royal Oak in Paley Street (Bray):
Michael Chapman @michaelrchapman and @RoyalOakPaleySt
The Samling in Ambleside:
Ian Swainson @RealIanSwainson
Simon Radley at The Chester Grosvenor in Chester:
Simon Radley @SimonRadley_TCG and @TheGrosvenor
Simpsons in Birmingham:
Andreas Antona @simpsons_rest
The Sportsman in Seasalter:
Stephen Harris @Sportsmankent
The Star Inn in Helmsley:
Andrew Pern @andrewpern
The Terrace (Montagu Arms Hotel) in Beaulieu:
Matthew Tomkinson @MTomkinsonChef
Thackeray's in Royal Tunbridge Wells:
Richard Phillips @RPhillipsChef
The Treby Arms in Sparkwell:
Anton Piotrowski @antonpiotrowsk1 and @thetrebyarms
Restaurant Tristan in Horsham:
Tristan Mason @tristanshorsham
Turners in Birmingham:
Richard Turner @turnersrestbrum
Mr Underhill's in Ludlow:
Chris Bradley @mrunderhills
West House in Biddenden:
Graham Garrett @grahamgarrett
Wilks restaurant in Bristol:
James Wilkins @jimmybird and @wilksrestaurant
The Woodspeen Restaurant in Newbury:
John Campbell @JCChef1 and @thewoodspeen
Yorke Arms in Pateley Bridge:
Francis Atkins @TheYorkeArms
5 North St in Winchcombe:
Marcus Ashenford (currently not on Twitter)
London
Alyn Williams at the Westbury:
Alyn Williams @chefalyn and @Alyn_Williams
Amaya:
Karunesh Khanna @RealindianFood
Ametsa with Arzak Instruction (at the Halkin Hotel):
@AmetsaArzak
Angler at the South Place Hotel:
Tony Fleming @tonyflem and @southplacehotel
Arbutus:
Anthony Demetre @AnthonyDemetre and @arbutus
l'Autre Pied:
Andy McFadden @Andy_McFadden and @LAutrePied
Barrafina (Soho):
Nieves Barragán Mohacho @BarrafinaFRst
Benares:
Atul Kochhar @atulkochhar and @Benaresofficial
Bonhams:
Tom Kemble @tom_kemble and @DineatBonhams
Brasserie Chavot:
Eric Chavot @EChavot and @brasseriechavot
Chez Bruce:
Matt Christmas @MattChristmas1 and @ChezBruce
City Social:
Jason Atherton/Paul Walsch @paulwalshchef and @CitySocial_T42
The Clove Club:
Isaac McHale @itsisaac and @thecloveclub
Dabbous:
Ollie Dabbous @DabbousLondon
Fera at Claridge's:
Simon Rogan/Dan Cox @simon_rogan, @ChefDanCox and @FeraAtClaridges
Galvin at Windows:
Chris Galvin @Galvin_brothers, Joo Won @Joowon1229 and @GalvinatWindows
Galvin La Chapelle:
Jeff Galvin @Galvin_brothers
Club Gascon:
Pascal Aussignac @lechefpaski and @Club_Gascon
The Glass House:
Berwyn Davies @berwyjdavies and @The__Glasshouse
Dining Room at the Goring:
Shay Cooper @TheGoring
Gymkhana:
Karam Sethi @GymkhanaLondon
Hakkasan Hanway Place:
Tong Chee Hwee @HakkasanHanway
Hakkasan Mayfair:
Tong Chee Hwee @HakkasanMayfair
The Harwood Arms:
@HarwoodArms
Hedone:
Mikael Jonsson @HedoneLondon
HKK:
Tong Chee Hwee @HKKlondon
St John Restaurant:
Fergus Henderson/Chris Gillard @Mr_St_JOHN, @chefgillard and @SJRestaurant
Kai Mayfair:
Alex Chow @kaimayfair
Kitchen Table at Bubbledogs:
James Knappett @jamesknappett and @bubbledogsKT
Kitchen W8:
Philip Howard/Mark Kempson @philiphoward8, @MarkMKempson and @KitchenW8
Launceston Place:
@LauncestonPlace
Lima:
Virgilio Martinez @VirgilioCentral and @Lima_London
Locanda Locatelli:
Giorgio Locatelli @LocLocatelli
Lyle's:
James Lowe @lowejames and @LylesLondon
Murano:
Angela Hartnett @AngelaHartnett and @MuranoLondon
Outlaw's at the Capital Hotel:
Nathan Outlaw/Pete Biggs @Nathanoutlaw and @hotelcapital
Petrus:
Neil Snowball @petrus
Pied à Terre:
@PiedaTerreUK
Pollen Street Social:
Jason Atherton/Ross Bryans @Rossbryans and @PollenStSocial
Portland:
Merlin Labron-Johnson @labronjohnson and @portland113
Quilon:
Sriram Vishwanathan Aylur @thequilon
L'Atelier de Joel Robuchon:
Olivier Limousin @latelierlondon
The River Cafe:
Sian Owen @RiverCafeLondon
Seven Park Place (St James Hotel and Club):
William Drabble @SevenParkPlace
Social Eating House:
Jason Atherton/Paul Hood @hoodpaulie and @Socialeathouse
Restaurant Story:
Tom Sellers @tomsstory and @Rest_Story
Tamarind:
Alfred Prasad @TamarindMayfair
Texture:
Agnar Sverrisson @AgnarSverrisson and @TextureLondon
Trishna:
Karam Sethi @trishnalondon
La Trompette:
Rob Weston @LaTrompetteUk
Wild Honey:
Anthony Demetre @AnthonyDemetre and @whrestaurant
Yauatcha:
@yauatcha
Scotland
Albannach in Lochinver:
Colin Craig (currently not on Twitter)
Boath House in Nairn:
Charlie Lockley @BoathHouse
Braidwoods in Dalry:
Keith and Nicola Braidwood (currently not on Twitter)
The Cellar in Anstruther:
Billy Boyter @billy_boyter
Isle of Eriska in Eriska:
Ross Stovold @isleoferiska
Kinloch Lodge in Sleat, Isle of Skye:
Marcello Tully @marcello_tully and @kinloch_lodge
The Kitchin in Edinburgh:
Tom Kitchin @TomKitchin
Martin Wishart in Edinburgh:
Martin Wishart @RMWLeith
Martin Wishart at Loch Lomond in Balloch:
Grame Cheevers @Chef_cheevers and @MWLochLomond
Number One (Balmoral Hotel) in Edinburgh:
Jeff Bland @The_Balmoral
The Peat Inn in Peat Inn:
Geoffrey Smeddle @geoffreysmeddle
Sangster's in Elie:
Bruce Sangster (currently not on Twitter)
21212 in Edinburgh:
Paul Kitching @PaulK21212
Wales
The Checkers in Montgomery:
Stéphane Borie/Sarah Francis @CheckersChef
Tyddyn Llan in Llandrillo:
Bryan Webb @bryanwwebb
The Walnut Tree in Abergavenny:
Shaun Hill @shaundhill
Whitebrook in Whitebrook:
Chris Harrod @ChefChrisHarrod and @crownwhitebrook
Ynyshir Hall in Machynlleth:
Gareth Ward @garethward1 and @ynyshirhall
Republic of Ireland
Aniar in Galway:
Ultan Cooke @Shmult and @AniarGalway
Campagne in Kilkenny:
Garrett Byrne @campagnekilkenn
Chapter One in Dublin:
Ross Lewis @ChapterOneDub
l'Ecrivain in Dublin:
Derry Clarke @derryclarke
Eipic in Belfast:
Michael Deane @MichaelDeane61 and @EatAtDeanes
The Greenhouse in Dublin:
Mickael Viljanen @stove28 and @_the_GREENHOUSE
The House Restaurant (Cliff House Hotel) in Ardmore:
Martijn Kajuiter @Kajuiter and @CliffHouseHotel
Lady Helen at the Mount Juliet Hotel in Thomastown:
Cormac Rowe @mountjuliet
Loam in Galway:
Enda McEvoy - @endamcevoy and @GalwayLoam
OX in Belfast:
Stephen Toman @oxbelfast
First edition: November 2011
Second edition: May 2012
Third edition: September 2012
Fourth edition: May 2013
Fifth edition: September 2013
Sixth edition: September 2014
Seventh edition: September 2015
Martijn Kajuiter @Kajuiter and @CliffHouseHotel
Lady Helen at the Mount Juliet Hotel in Thomastown:
Cormac Rowe @mountjuliet
Loam in Galway:
Enda McEvoy - @endamcevoy and @GalwayLoam
OX in Belfast:
Stephen Toman @oxbelfast
First edition: November 2011
Second edition: May 2012
Third edition: September 2012
Fourth edition: May 2013
Fifth edition: September 2013
Sixth edition: September 2014
Seventh edition: September 2015