Duncan Cargill

Duncan Graduated from LCGD in 2018 with distinction. In 2019 he was awarded the Society of Garden Designers Award for his final project at the College and in the same year, the RHS Chelsea Flower Show garden that he designed with fellow LCGD graduate Colm Joseph was awarded a Silver-Gilt medal

He is one half of Cargill Sykes, a landscape and garden design studio based in London. They are currently working on projects in London, Gloucestershire and Norfolk. The Cargill Sykes style is rooted in an appreciation of traditional garden design principles applied to contemporary needs and tastes. We work hard to establish a clear understanding of client’s requirements and the environment in which they live and for every job we strive to deliver a beautiful, memorable experience

For more information about the work we are undertaking and some of our projects please visit our website or contact us

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Cargill Sykes Landscape and Garden Design


I graduated from The London College of Garden Design in 2018, having studied fine art at Chelsea College of Art and art history at Birkbeck.

However my greatest education has been in the gardens of my family in Norfolk.




The brief was to create an oasis of calm in an overgrown space behind a recently renovated house in Kings Cross. We took into account the requirements of the client for a place to relax and entertain and created a two level garden that took advantage of the sun in late afternoon. We chose a restricted palate of colours – blues, silvers, whites and greens and kept the layout elegant and simple. We designed a bespoke bench in the lower end of the garden just long and wide enough for the client to fall asleep on in the evening sun.


Clipped hedging, sculptural trees, steel panels, a contemporary rill, elegant fountains and a rose meadow combine in a strikingly modern design, strongly rooted in history. Conceived to be viewed from all sides with composed vistas drawing people in, the water feature traverses the colonnade and is constructed to allow visitors to walk underneath the cascading water, which flows into a rill circulating the garden. Cantilevered stone seats provide quiet spots for visitors to perch and contemplate. In between this formal structure of steel panels, stone and formal clipped topiary, roses intermingle with ornamental grasses, perennials and bulbs to create a soft and romantic atmosphere.


Soft drifts of grasses and dry planting were the perfect foil for this super modern Channel 4 Grand Designs project in Norfolk. Stretching out from a new circular lawn we created areas of textured planting to blur the boundary between the garden and the natural environment that surrounds it. Spots of colour both compliment and clash with the concrete and glass whilst the dry garden retains its structure and form, long after the Summer peak.


Whites, purples and blues were put together for this garden fronting a large stucco fronted townhouse on Chiswick Mall, London. The Garden enjoys a mix of direct sunlight and shade so we have designed areas of woodland planting in one corner and dry planting an another. Classic cottage garden perennials sit alongside fern and rambling roses while structure is supplied with ilex and yew.