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Case Study C: Rewilding at Knepp Estate, West Sussex, UK (HIC)

Part of Sustaining Ecosystems — GCSE Geography

This deep dive covers Case Study C: Rewilding at Knepp Estate, West Sussex, UK (HIC) within Sustaining Ecosystems for GCSE Geography. Revise Sustaining Ecosystems in The Living World for GCSE Geography with 0 exam-style questions and 18 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 6 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

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🦋 Case Study C: Rewilding at Knepp Estate, West Sussex, UK (HIC)

In 2001, Charlie Burrell and Isabella Tree made a decision that their neighbours thought was eccentric bordering on insane. They owned 3,500 acres of fertile farmland in the Weald of West Sussex — and they decided to stop farming it.

Not because the land was unproductive. Because intensive farming had made it biologically dead. Decades of ploughing, fertilisers, pesticides and tight grazing management had produced good yields of wheat and oilseed — but the hedgerows were empty, the ponds were silted, the soil was compacted, and the fields were silent. There were no turtle doves. No nightingales. No purple emperor butterflies. No stag beetles. The land produced food but nothing else.

What happened next became one of the most celebrated experiments in modern conservation — and a case study that examiners love because it is genuinely surprising.

The Rewilding Approach

Rewilding means removing intensive human management and allowing natural processes to reassert themselves. At Knepp, this meant:

Stopping all ploughing, pesticide use, and intensive grazing

Introducing free-roaming large herbivores to mimic the natural grazing patterns of pre-agricultural Britain: longhorn cattle, Tamworth pigs, Exmoor ponies, and fallow deer — all of which create different habitats through their feeding and movement

Allowing natural scrub and woodland to develop wherever it chose, without human direction

Creating new ponds, allowing rivers to meander naturally, and removing drainage infrastructure

No introduction of specific plants or tree species — the emphasis was on letting nature decide what grew where

The Results — Twenty Years Later

Turtle doves — critically endangered in the UK, with numbers down 98% since 1970 — now breed at Knepp. It hosts approximately 2–3% of the entire UK population.

Nightingales — one of Britain's most threatened species — have 20+ breeding pairs, more than anywhere else in the UK

Purple emperor butterflies — Britain's largest butterfly, rare elsewhere — appear in their hundreds in summer

White storks nested at Knepp in 2020 — the first successful white stork nesting in Britain for over 600 years

All five UK species of owl are present; peregrine falcons, hobbies and red kites breed regularly

Massive recovery in insect abundance — critical for pollination and the food chain

Soil carbon levels have increased substantially; the land now acts as a carbon sink rather than a carbon source

The Economics

Perhaps the most important lesson from Knepp for geographers: rewilding is not just ecologically successful — it is financially successful. The estate has developed a safari-style tourism business (glamping safaris, guided wildlife walks, educational visits) that generates approximately £2.5 million per year — significantly more than the intensive farming it replaced. The wildland beef and pork from the free-roaming herds sells at premium prices. The book written by Isabella Tree about the project became a bestseller. Wildlife documentaries have been filmed there. The land is now worth more wild than it was farmed.

Evaluation: Brilliant — But Scalable?

What Knepp proves: Ecosystems can recover at remarkable speed if given the chance. Wildlife species that have been declining for decades can return within years when habitats are restored. Rewilding can be economically viable — potentially more profitable than conventional farming in the right circumstances. It also sequesters carbon and provides flood control as secondary benefits.

The limitations: Knepp requires a landowner wealthy enough to absorb years of transition costs before the tourism business becomes profitable. Most UK farms are tenanted — the tenant cannot simply decide to stop farming without losing their tenancy. Rewilding requires patience: it takes 10–20 years to see the results that Knepp has achieved. And it is not a food production strategy — if every farm rewilded, food production would collapse.

The key exam judgement: Knepp is inspiring proof that ecosystem recovery is possible at speed. But it is not a universal solution. It works where the landowner has capital and can generate alternative income from tourism; it does not scale easily to all farms. The most realistic vision is rewilding at the margins — field edges, unproductive land, river valleys — alongside continued food production on the best agricultural land.

Quick Check: Compare the REDD+ scheme in the DRC with rewilding at Knepp. What does each approach achieve, and what is the main limitation of each?

Case Study C: Rewilding at Knepp Estate, West Sussex, UK (HIC)

🦋 Case Study C: Rewilding at Knepp Estate, West Sussex, UK (HIC)

The Rewilding Approach

The Results — Twenty Years Later

The Economics

Evaluation: Brilliant — But Scalable?

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