In photos: Inside a UK megafarm

US-style "megafarms" are sweeping across the UK, a major Bureau investigation has revealed, a shift that is changing the face of British agriculture.

The increase in megafarms – which can house more than a million chickens, 20,000 pigs or 2,000 cattle apiece – is part of a 26% rise in intensive livestock farming over the last six years. Read the full investigation here.

We were invited to see firsthand what this kind of farming looks like, by Herefordshire farmer Richard Williams. From two sites he produces more than two million chickens a year for the giant food company Cargill, which supplies Tesco.

All photos by Rob Stothard


In a valley in rural Herefordshire, near the village of Kington, an orchard leads down to a tarmac road. Through a gap in the trees, four industrial sheds can be seen, giant green cylinders rising up behind them.

If you stand still you can hear a murmuring of chickens. From the top of the hill there is no odour, but nearer to the sheds, the sweetish, sickly smell is overpowering. 

Penhros intensive poultry farm, one of two sites Williams runs, has four sheds housing 42,000 chickens each.

Inside, birds are packed as far as the eye can see, making it impossible to see the floor.  The four sheds are 110 metres long by 20 metres wide, and there are 42,000 chickens in each. They are stocked at about 17 birds per square metre, which meets legal requirements. 

The chickens are trucked in as chicks, with just under a third “thinned” – removed from the sheds – to be slaughtered at just over four weeks old. The rest carry on to just over five weeks, when they weigh about 2.2kg. Almost eight crops of such chickens are reared each year, making 1.3m annually, with the sheds cleaned between every batch.

The environment inside the sheds is tightly controlled. The yellow pipes dispense additive-boosted food and the red ones give the birds chlorinated water.

Williams, the farmer, points to what is called "enrichment" that is provided for the birds' welfare: windows, so the animals have daylight and fresh air; straw bales they can jump on, with perches, and objects to peck; and the amount of light is carefully modified through the growing stages. “These things mean they can express their natural behaviours," he says.

The conditions are in line with government regulations. But it is unclear how a chicken on one side of the shed would ever get through thousands of birds to a perch or bale in the centre. Each batch of chickens is called a "crop" and the farm "grows" almost eight crops a year, with the sheds cleaned in between each one.

A bird sits on one of the hay bales provided to enrich the farm environment.

Each shed’s environment is carefully controlled so the birds will stay healthy and grow the maximum amount in the shortest time. The temperature, humidity, CO2 levels and the amount of darkness are tightly regulated. 

The birds are fed on a mixture of pellets provided by Cargill, containing soya, minerals and other additives. This is mixed with wheat, mostly sourced locally. None of the material is genetically modified. The drinking water is chlorinated to keep it clean.

No antibiotic has been used since the site was set up two years ago, and the chickens are given a product to improve their gut flora. 

"If the birds aren’t happy we aren’t making a profit," says Williams. "So looking for the highest animal welfare is in my interest."

Williams has been a farmer his whole life. So was his father, buying a 60 acre farm in 1960 that Williams has now expanded.

Williams believes this is the most efficient way to produce protein – and that the market shows this is what consumers want. Only 3% of chicken bought in the UK is free range, 1% is organic. 

His farms make the meat that people want, he says, and the production methods make it affordable. More people are buying chicken every year. "We’ve got a system which is consumer-driven," he says. "Wages haven’t kept up with inflation. This is producing safe, cheap, available protein. Is it more complicated than that?"

Two birds square up on day 28 of their life - they have another week before slaughter.

The chickens have a good life, says Williams. His staff all have a "poultry passport" – training on how to best look after the birds.

He employs three people who work on the farm full time – as well as contractors from 40 different companies. Cargill is one of the biggest employers in Herefordshire.

"It’s a 24/7 job. We're in there Sunday mornings," he says. "If you choose to work with animals you’ve got to care about them. It’s a weird concept because they’re going to die but while they’re alive you care for them."

Intensive farms are being driven by consumer demand. Farmers like Williams say their production systems are the most efficient way to make the cheap meat people want.


  • Steven McFarlane

    Basically Frankenstine chicken and it cannot be good for the animal or the consumer.

  • Steven McFarlane

    Basically Frankenstine chicken!

  • Steven McFarlane

    not good for the consumer and definately not good for the chicken

  • Karen Hoyle

    "THINNED" ????
    2.2kg at 5 weeks ????

  • Karen Haywood

    So much for Hugh Fearnley-Whittingstall's 'Chicken Out' campaign a few years ago. How do we persuade Joe Public to purchase ethically reared but more expensively produced animals? Probably the main argument is such production is not sustainable. The soya in the main feed will come from abroad, probably Argentina where high pesticide and herbicide use is affecting both the environment and the people. When will we take notice of the warnings from FOE, CIWF, Greenpeace, SA and so many others?

  • Jen Hawkes

    This should never be allowed. The poor chickens have no real quality of life and we are going backwards in animal welfare. Turn vegetarian, it's the only answer if you feel strongly about this sort of treatment to animals.

  • Angela Feane

    It's still murder!blood money..I can't imagine how many millions of birds you have killed since 1960. Every animal has a right to live ..don't blame the demand of people your just lining your pockets with blood money you don't have to do's your choice I'm sure you've made enough money to live a more then comfortable's your bad karma..and karma will get you that's a promise..all that suffering for those chickens so cruel,and all for money..think what your doing man you can stop now.

  • Elizabeth

    This is shocking. So sad. This is no way to produce our meat

  • Veg in reply to Elizabeth

    "our meat"?

    The way to stop this is to vote with your feet / your dollar. We do not need to kill to be able to live a healthy, fulfilled life.

  • Caroline Bell

    I thought thus type of animal farming was banned in the UK years ago. I find it hard to believe that this cruelty can be legal in our country. Shame on the farmers, the government and the public who support this disgraceful practice. I always try and buy organic but it's really hard to get so i generally end up with free range.

  • Rosemary Marshall

    We have to reduce our reliance on cheap meat. Fourteen and a half per cent of greenhouse gases are caused by livestock agriculture. More than all the transport systems put together. Continuation of this appalling system will hasten the end of the ability of the planet to support us................the animals' revenge?
    Read: DEADZONE: Where the Wild Things Were - by Philip Lymbery