At 10 Union Street we are committed to reducing our carbon footprint and making sure that we leave a positive impact on the planet in the work that we do here. Below we have described the simple everyday ways we do this.

Bees & Wild Flowers
Our rooftops at 10 Union Street have become home to not only an abundance of wild flowers and herbs but also our very own colony of bees. From spring last year we have raised two hives of bees on our rooftop garden to help the pollination of our wild flowers and to increase local biodiversity. Our plan by next May will be to harvest our own 10 Union Street honey which we will use in our food & beverage offerings as well as making this available to buy in our onsite Café. We are currently in discussion with ‘Bankside Urban Forest’ an initiative put together by Better Bankside to transform the network of streets and spaces across Bankside, to help us develop our gardens further.

Café
In our Cafe we use Crude Coffee as our supplier. Crude, like us, are committed to sustainability and ensuring flavour is delivered in its ‘purest, crudest form’. For our hot food options we have stepped away from meat options and are embracing a completely vegetarian and plant based hot food menu, with the likes of vegetarian moussaka and vegetable cottage pie featuring.

Composting & Coffee Grounds
We put all of our food waste onsite into our ‘hot-composting’ scheme. We are currently looking into finding compostable bags to store these in, so that members of the college and the public can collect a bag to use at home, we will also be donating bags of compost to the Bankside Urban Forest project. For the time being however this compost is not going to waste and is being used to fertilise our rooftop garden.
Our coffee grounds are following the same journey and are being offered to anyone at the college who would like to use these in their gardens.

Plastic Free
Our front of house operation at 10 Union Street is COMPLETELY plastic free, something that we are immensely proud to boast about here! All of our food packaging, coffee cups, coffee lids and drinks receptacles are made out of recyclable or compostable material, meaning we have no unnecessary waste onsite. We are currently working with Better Bankside also to see if we can further stretch this even further throughout the site.

The Building
The building itself of 10 Union Street also embraces our green initiatives. All electricity in the building has been switched to 100% renewable energy provisions. Our new cooling, heating and lighting systems have significantly reduced the CO2 emissions and running costs. These new systems and changes in building operations reduced CO2 emissions by 43% compared to the old system used.
We have plenty more green initiatives in the pipeline, so please do keep an eye out for these; and if you would like any more information regarding this venue please contact us at events@10unionstreet.co.uk

Behind every great ingredient is a producer with a story to tell. 🌱
Last week, our Culinary Director, @seansimmonds, joined food leaders from around the world at Terra Madre in Turin to discuss how small-scale producers can access larger markets while receiving fair value for their products.
At Graysons, this is something we`re deeply passionate about. We work closely with the @slowfood_international community, producers and suppliers to help identify ways that exceptional ingredients from smaller businesses can find a place within mainstream catering and procurement.
Because supporting great food starts with supporting the people behind it.
#Graysons #TerraMadre2026 #SlowFood #SupportingProducers #SustainableFood #FoodForGood
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A fantastic effort from Chris & Adam last night at the ACE Ready Steady Cook competition, securing an impressive third-place finish against some tough competition. 👏
From the first plate to the final judging, they showcased creativity, skill and teamwork throughout.
We`re incredibly proud of their achievement and the way they represented Graysons on the night. 🏆
#Graysons #ReadySteadyCook #ACECompetition #CulinaryExcellence
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From all of us at @graysons.uk, we`d like to extend our warmest congratulations to Simon Hall on being one of the finalists of the StrEAT Food Awards 2026. 🎉
Being recognised among the finalists is a fantastic achievement and a reflection of the hard work, passion, and dedication Simon brings to the industry every day. To be acknowledged alongside some of the sector`s best talent is something to be incredibly proud of, and we are delighted to see his commitment and expertise celebrated on such a prestigious stage.
Congratulations, Simon, on this well-deserved recognition. We are immensely proud of your achievement and look forward to seeing what comes next. 👏🏆
#StrEATAwards2026 #AwardFinalist #Graysons #FoodServiceExcellence #ProudMoment
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Sep 23
When @arizonastateuniversity came to London, Dartmouth House was ready to roll out the welcome. 🌸
Ahead of the second-ever American college football game to be played in the UK, our elegant townhouse came alive with flower greeters, roving musicians and fans from across the ASU community.
A memorable evening where London heritage met American sporting spirit. Special thanks to @abbey_events for choosing our venue to host such a wonderful evening.
#DartmouthHouse #ArizonaStateUniversity #CollegeFootball #MayfairEvents #LondonVenue
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Every detail earns its place on the plate. ✨
From first bite to final toast, Six Clerks Restaurant & Bar brings together bold flavours, elegant presentation, and a warm welcome in the heart of the city.
Reserve your table today using the link in our bio @sixclerks
#SixClerksRestaurantAndBar #CityLunch #WineAndDine #LondonDining #FoodieLondon
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Deals? Closed. 🔒✨
The Graysons Sales Team understood the assignment. Bringing the energy, sealing the deals and making #SalesClosingDay look good while doing it. 😎🥂
And with such a busy day, the team rounded it off and attended a Film London networking event, connecting with creative leaders and production professionals while promoting Graysons Venues as locations for future events and filming.
#Graysons #SalesTeam #MiddleTemple #113ChanceryLane #FarmersandFletchers #10UnionStreet #DartmouthHouse
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Sep 16
London outside. Magic inside. ✨
Step through the doors of Dartmouth House and discover a venue where every corner is dressed to impress.
Ready to see it for yourself? Get in touch with our team using the link in our bio @dartmouthhousemayfair
#DartmouthHouse #EventsWithCharacter #LondonVenue #VenueFinding #EventPlanning
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Found the one? Now find the venue. 💍✨
Discover Middle Temple, with historic halls, beautiful gardens, and a wedding backdrop that does all the heavy lifting.
Enquire today to start planning using the link in our bio.
#GraysonsVenues #MiddleTemple #LondonWeddingVenue #WeddingInspiration #GardenWeddings
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Good vibes, great occasions. ✨🍽️
Discover Farmers & Fletchers in the City, bringing a little extra to every event. 🥂
#FarmersAndFletchers #Graysons #EventCatering #LondonEvents
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Tables set. Plates polished. Catering ready. All that`s missing is your guest list. ✨
Discover a venue where exceptional dining meets effortless style at 113 Chancery Lane.
#GraysonsVenues #113ChanceryLane #LondonVenue #EventsInLondon
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🎄 Christmas is all about bringing people together, and there`s no better place to celebrate than at one of Graysons` exceptional London venues.
From the timeless elegance of Dartmouth House and Middle Temple to the versatile event spaces at 10 Union Street, 113 Chancery Lane, and Farmers & Fletchers, our expert teams deliver memorable festive occasions complemented by outstanding seasonal menus.
Enquire now and make this Christmas one to remember using the link in bio @graysons.uk
#ChristmasWithGraysons #FestiveEvents #ChristmasInLondon #EventCatering #CorporateChristmasParty
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Sep 3
✨ Celebrate the festive season in one of Mayfair`s most beautiful private event venues.
From elegant Christmas dinners to sophisticated drinks receptions, Dartmouth House offers a stunning setting, exceptional hospitality and an atmosphere your guests won`t forget.
Enquire today to secure your preferred festive date using the link in bio @dartmouthhousemayfair
#ChristmasPartyVenue #MayfairEvents #LuxuryEvents #PrivateHireLondon #LondonVenue #DartmouthHouse
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Aug 25
✨ Fashion, elegance, and a spectacular setting. ✨
We were delighted to host @ohpolly at @dartmouthhousemayfair, where timeless architecture met contemporary style for an unforgettable event in the heart of Mayfair 🤍.
Thank you to the Oh Polly team for choosing our historic venue. It was a pleasure to welcome your guests and help create such a memorable evening ✨
#DartmouthHouse #OhPolly #Mayfair #LondonEvents #LuxuryVenue #EventInspiration #LoveIsland
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Set against the breathtaking backdrop of @middletemplevenue, the Graysons Summer Party was a wonderful opportunity to connect, celebrate, and enjoy a well-deserved evening together.
A huge thank you to our talented team for the fantastic food and drinks. It was great to see so many of the team having fun in the sunshine. ☀️🥂
#Graysons #MiddleTemple #SummerParty #TeamCelebration
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Aug 18
Elegant Georgian interiors, stunning courtyards and timeless sophistication.
Dartmouth House offers a truly distinctive setting for everything from private dinners to large-scale celebrations. ✨
Ready to make your guests say "wow"? Get in touch and start planning your perfect event using the link in our bio @dartmouthhousemayfair
#DartmouthHouse #LondonEvents #PrivateDining #SpecialOccasions
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What a great evening at the Turner & George Butchery Masterclass 🥩
With a fantastic group of Executive Chefs, Head Chefs and Operations Managers. It was brilliant to get hands-on with some incredible produce and learn more about what really makes quality meat stand out. From native British breeds and trusted independent farms to traditional butchery and understanding the journey from farm to plate, it was a great reminder of how important provenance is.
A big thank you to the Turner & George team for sharing their knowledge and passion, and to everyone who came along and made it such an enjoyable evening. Looking forward to the next one!
#GraysonsRestaurants #TurnerAndGeorge #Butchery #Provenance #Hospitality
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☀️ A great morning spent with @hirespace touring Dartmouth House, one of Mayfair’s most distinguished event venues.
Combining historic elegance with flexible event spaces, it’s easy to see why Dartmouth House remains a popular choice for weddings, conferences, receptions and memorable events.✨
If you’re looking for a venue in the heart of London, Dartmouth House is well worth a visit.
#Mayfair #LondonVenues #WeddingInspo #CityofLondon #EventSpaces
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Aug 4
✨ We’re proud to be partnering with @missjonesgroup ✨
Through this partnership, we’re connected to a thriving community of EAs, PAs, and event bookers 🎉 When bookers choose our venue/service through Miss Jones, they also earn reward points that can be redeemed for luxury stays, dining, and more 🥂
We’re excited to be part of this community and to showcase everything we have to offer! 💫
#MissJonesGroup #EventProfessionals #CorporateEvents #Rewards
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What better place to host an annual sales training than at @farmersfletcherscity?
The Graysons team recently attended a valuable training session with @sellingsavvy at Farmers & Fletchers in the City, combining expert sales development with the outstanding hospitality environment we`re proud to deliver every day.
A productive day filled with learning, collaboration, and fresh perspectives for the year ahead.
#Graysons #FarmersAndFletchers #SellingSavvy #SalesTraining #HospitalityIndustry #LearningAndDevelopment
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Jul 30
✨ Dreaming of a London wedding filled with elegance and timeless beauty?
Dartmouth House offers stunning interiors, a beautiful courtyard, and exceptional service.
💍 Arrange your viewing using the link in our bio and let us bring the magic to your special day
#Mayfair #DartmouthHouse #Weddings #TimelessElegance #LondonVenue
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