Related to: 'Infographic Guide to Life and the Universe and Everything'

Alan Herdman

Alan Herdman is a world-renowned Pilates expert. He has established Pilates exercise studios in several countries, including opening the first Pilates studio in London in 1970. Three of his books, Pilates: Creating the Body You Want, The Busy Person's Guide to Pilates and Pilates Plus are published by Gaia Books.

Blanche Vaughan

Blanche Vaughan is a food writer and chef who worked at the River Cafe, Moro and St John. She has written for the Guardian and published four books with Weidenfeld & Nicolson including One Pot and Egg. She wrote itsu: the cookbook with Julian Metcalfe. Blanche is Food Editor at House & Garden.

Christie Goodwin

Christie Goodwin is a British photographer with a career that spans over 35 years. She has worked for Ed Sheeran, Katy Perry, Taylor Swift, One Direction, Paul McCartney, Rod Stewart and other top recording artists. Christie's work appears on CDs, DVDs and tour merchandise, and in international publications, books and exhibitions. When not on the road in a tour bus, Christie is at home in London, where she regularly shoots as official photographer for the Royal Albert Hall. She can be found on both instagram and twitter @christiegoodwin.

Clodagh Mckenna

Clodagh McKenna is a chef, restaurateur and broadcaster who studied in France and New York and trained and worked at Ballymaloe. She is the author of five books and runs a restaurant in Dublin called Clodagh's Kitchen. She has hosted numerous pop-ups in collaboration with brands including Selfridges, Fortnum & Mason and The Whitney Museum. Instagram: @clodagh_mckenna

Cyrus Todiwala

Cyrus Todiwala OBE, DL, was born in Bombay and rose to become Executive Chef of the Taj Group of hotels in India. Looking for a new challenge, he moved to Britain, where he has lived for more than twenty years. As well as running three successful restaurants in London, he has written a number of cookery books and in 2013 co-presented The Incredible Spice Men on BBC TV. He also makes frequent appearances on BBC Saturday Kitchen and in other media.

Dan Docherty

Dan Docherty is an international Tai Chi and Qijong consultant who has taught, and continues to teach, thousands of students at seminars throughout the world. Since 1989, Dan has been the organiser of the British Open Tai Chi Championships. He is Chairman of the Tai Chi Union for Great Britain. He regularly contributes to martial arts publications and is the author of the recently published Tai Chi Bible (Godsfield, Feb 2014), Tai Chi Chuan and Complete Tai Chi Chuan. Dan learned Tai Chi Chuan while serving as an Inspector in the Royal Hong Kong Police Force between 1975 and 1984. In 1980 he won the Open Weight Division at the fifth South-east Asian Chinese Pugilistic Championships in Malaysia. He is an LLB graduate from Glasgow University and holds a postgraduate CNAA diploma in Chinese. He regularly travels to the Far East, especially to China, for research.

Danielle Marchant

Danielle Marchant has a long work history as a successful executive coach in the corporate industry, working with top-level executives at companies such as HSBC, McKinsey Unilever and SAP. She has more than 13 years experience working with leaders in 20 different countries; and spent 3 years living and working in Asia, where she set up a pioneering coaching company and an award winning change management consultancy. After learning that goals and ambitions could be just as happily and successfully achieved when simply allowing the body and mind to pause, she adapted her coaching style with both personal and corporate clients to flow rather than fight against the ups and downs of life.Find out more about Danielle at www.lifebydanielle.com

Eric Zandona

Eric Zandona is Director of Spirits Information at the American Distilling Institute, and a writer for Distiller Magazine. He also runs the website EZdrinking.com and is an author/editor for the ADI's publishing arm, White Mule Press. He lives in Mexico.Twitter: @EZdrinking

Gwen Bailey

Gwen Bailey was the Head of Animal Behaviour for The Blue Cross, one of Britain's foremost animal welfare charities, for many years and also spent 15 years as Chairman of The Association of Pet Behaviour Counsellors. As well as lecturing at national and international conferences, Gwen also runs training courses for staff at animal charities around the world and is the owner of The Puppy School, establishing a network of professional, well-trained tutors across the UK. She is the author of several dog-training titles including Puppy School, What is my Dog Thinking?, The Rescue Dog and Choosing the Right Dog for You, all published by Hamlyn.

Heather Couper

Heather Couper is a past President of both the British Astronomical Association and the Society for Popular Astronomy. She is a Fellow of the Royal Astronomical Society and the Institute of Physics, and a former Millennium Commissioner, for which she was awarded the CBE in 2007.

Henry Dimbleby

Leon was founded on the twin principles that food can both Taste Good and Do You Good. When Henry Dimbleby, John Vincent and Allegra McEvedy opened their first restaurant, on London's Carnaby Street in July 2004, their aim was to change the face of fast food. Six months after opening, Leon was named the Best New Restaurant in Great Britain at the Observer Food Monthly Awards (by a judging panel that included Rick Stein, Gordon Ramsay, Nigel Slater, Heston Blumenthal, Ruth Rogers and Jay Rayner).

Jake Spicer

Jake Spicer is an artist and drawing tutor based in Brighton, England. He is head tutor at the independent drawing school Draw, a co-director of the Drawing Circus and regularly runs portrait and figure drawing courses for the Camden Arts Centre and National Portrait Gallery.www.jakespicerart.co.uk@BrightonDrawing

John Vincent

John is co-founder of Leon, which now has more than 55 restaurants (including restaurants in Amsterdam, Utrecht, Oslo and Washington DC). He wrote LEON Naturally Fast Food with Henry Dimbleby, LEON Family & Friends with Kay Plunkett-Hogge, LEON Happy Salads and LEON Fast & Free with Jane Baxter and LEON Happy Soups with Rebecca Seal. He believes food has the power to delight, invigorate and bring people together. He thinks that our relationship with food should be positive and joyous and that we need to listen more carefully to our gut, eat more good fats, less sugar. And a whole lot more plants.

Judith Miller

Judith Miller began collecting in the 1960s while a student at Edinburgh University in Scotland. She has since extended and reinforced her knowledge of antiques through international research, becoming one of the world's leading experts in the field. In 1979 she co-founded the international best-seller Miller's Antiques Price Guide and has since written more than 100 books which are held in high regard by collectors and dealers.Judith Miller appears regularly on TV and radio. She is an expert on the BBC's Antiques Roadshow and has co-hosted the popular BBC series The House Detectives, ITV's Antiques Trail, and Discovery's It's Your Bid. She has appeared on The Martha Stewart Show and CNN. She is a regular lecturer and contributor to numerous newspapers and magazines, including the Financial Times, the Daily Telegraph, BBC Homes & Antiques and House & Garden. She has lectured extensively, including at the V&A in London and the Smithsonian in Washington.

Julian Metcalfe

Julian Metcalfe, co-founder of global success Pret A Manger, is dedicated to his next crusade, itsu... a revolutionary and refreshing take on affordable, healthy food. itsu's delicious but light menu and confident flavours are attracting millions of loyal fans. Years spent listening to the ideas and demands of Pret customers encouraged Metcalfe and his team to build a new type of food place altogether... They call it 'eat beautiful'. High-protein, low carb salads, brown rice dishes, freshly made sushi, soups and noodles - fresh food that tastes as good as it looks. There are now around 75 itsu shops in the UK. itsu has also developed a growing range of Asian-inspired healthy food products and is distributing them through supermarkets.

Kay Plunkett-Hogge

Kay Plunkett-Hogge is an acclaimed food and drinks writer, and the author of Aperitivo (Mitchell Beazley, 2017), Adventures Of A Terribly Greedy Girl (Mitchell Beazley, 2017), A Sherry & A Little Plate Of Tapas (Mitchell Beazley, 2016), Heat: Cooking With Chillies (Quercus, 2016) and Make Mine A Martini (Mitchell Beazley, 2014).In addition to her own books, Kay has co-authored a further six books, working with the award-winning chef Bryn Williams on his two books Bryn's Kitchen and For The Love Of Veg, Academy Award nominated actor Stanley Tucci on his second cookbook The Tucci Table, and with the American pizza guru Chris Bianco. She also co-wrote Leon: Family and Friends with John Vincent and Cook Yourself Thin: Quick and Easy.Born and brought up in 1970s Bangkok, Kay spent her childhood between two kitchens - inside for Western food, outside for Thai - before forging an international career in the film and fashion industries. It is an experience that has given her an in-depth knowledge of cuisines from all over the world.Kay began her food career when she set up a bespoke location catering service for fashion shoots. Since then, and in addition to her writing, she has worked as a food consultant for a variety of restaurants and bars, including Leon, The Formosa Café, Isola del Sole, Ma Goa and The Luang Prabang Motorcycle Club.Her cult book, Make Mine A Martini, was the Financial Times's pick for drinks book of the year, led to her induction into the Gin Guild (in the words of Heston Blumenthal: 'She shakes a damn fine cocktail.') and her writing regularly on cocktails for The Daily Telegraph and Sainsbury's Magazine. She has also written for the FT Weekend and Olive, and has published recipes in The Times, Hello and Borough Market's Market Life magazine. Kay currently writes a monthly column for Delicious.She lives in London with her husband, two cats and a dog.

Lia Leendertz

Lia Leendertz is an award-winning garden and food writer. She writes a monthly almanac column for the Telegraph, a monthly column for The Garden magazine and a long-running series on growing and eating seasonally for Simple Things magazine. She also contributes frequently to the Guardian and Gardens Illustrated. She is the author of several gardening books and the cookbook Petal, Leaf, Seed: Cooking with the garden's treasures. Lia appears monthly on BB6 Music with Cerys Matthews.Find out more about Lia at www.lialeendertz.com, on Twitter @lialeendertz and on Instagram @lia_leendertz.

Lucy Whigham

Lucy Whigham (née Goddard) trained at the University of Nottingham, UK, where she achieved a Masters in Nutrition and Dietetics. She has worked at a leading NHS Trust for over 10 years and also works in private practice at a prestigious clinic in London's Harley Street alongside this. Lucy sees patients for a variety of conditions but specializes in nutritional gastroenterology and disorders of the gut. Lucy has a particular interest in irritable bowel disease, other functional gut disorders and inflammatory bowel disease, and was an early adopter of using the low-FODMAP diet to treat these conditions, being part of the first group of dietitians trained by King's College London in 2010. She has seen a great number of people, both in her NHS and private practices, benefit from using the low-FODMAP diet to gain control of their gastrointestinal symptoms. Lucy has developed group sessions for sufferers of IBS on how to manage their symptoms using the low-FODMAP diet, speaks about gut health at healthy-living events and blogs regularly on gut health-related topics. @thegutdietitian

Martin Cohen

Martin Cohen is a writer, reviewer and editor specialising in popular books in philosophy, social science and politics. Recent projects include How to Live (2014) and Critical Thinking Skills for Dummies (2015). He has written about the politics of the climate change debate and has been invited by the Chinese government to discuss ecological rights and indigenous communities.

Martyn Nail

Martyn was first inspired to cook by his grandmother and was baking his own cakes by the age of eight. He earned his catering diploma from Highbury College in 1986, top in his field with distinction. Two years later, Martyn started work at Claridge's as Third Commis Chef under Maître Chef des Cuisines Marjan Lesnik and later under John Williams. Over the years Martyn rose through the ranks to become the hotel's highly respected Executive Chef in 2004. Under Martyn's direction, Claridge's iconic afternoon tea won the British Tea Guild Best Afternoon Tea award twice. Martyn has worked tirelessly to make the Claridge's Foyer and Reading Room into one of London's most happening venues for lunch and dinner. Discover more about Claridge's on Instagram @claridgeshotel, Twitter @ClaridgesHotel and at www.claridges.co.uk