Nuclear waste could be stored in vaults deep underneath national parks after MPs approved a new plan for the UK’s most toxic radioactive materials.

The move means protected areas including national parks and areas of outstanding natural beauty (AONBs) would be potential sites for the construction of waste disposal facilities.

Getting rid of radioactive waste is a tricky business, and some of the wilder suggestions in the past have included dumping it in the sea and blasting it into space.

After efforts to find a home for the UK’s nuclear waste stalled, the government launched a new strategy that has since undergone scrutiny by the Business, Energy and Industrial Strategy (BEIS) Committee.

After hearing evidence from key stakeholders, the committee has released a report in which they refuse to rule out protected areas as potential dumping sites.

Environmental groups have reacted with horror to the decision, pointing to the damage such facilities could cause to areas of pristine landscape.

But the report’s authors concluded that given the incredibly dangerous nature of the material in question “it is right for safety matters to prevail over environmental concerns in this case”.

The UK's National Parks Show all 23 1 /23 The UK's National Parks The UK's National Parks Blea Tarn, Lake District. DGKKPE Stormy afternoon light at Blea Tarn in the Lake District. Alamy Stock Photo The UK's National Parks Lake Buttermere, Lake District BEA5T4 Lake Buttermere Lake District National Park Cumbria England. Image shot 11/2008. Exact date unknown. Alamy Stock Photo The UK's National Parks Lindisfarne Castle, Northumberland A1WEJJ Lindisfarne Castle Northumberland Alamy Stock Photo The UK's National Parks Dunstanburgh Castle, Northumberland C62FGX Dunstanburgh Castle captured at dawn.. Image shot 04/2011. Exact date unknown. Alamy Stock Photo The UK's National Parks Loch Mallachie, Cairngorms C8FF94 Evening, dusk, view, tree, mountain, trees, Cairngorms, highlands, highland, pine, Loch, Loch Mallachie, Mallachie, national par Alamy Stock Photo The UK's National Parks Loch an Eilein, Cairngorms BW2N28 Loch an Eilein Alamy Stock Photo The UK's National Parks Loch Lomond A6KCMY LOCH LOMOND SUNSET. Image shot 2006. Exact date unknown. Alamy Stock Photo The UK's National Parks Littondale, Yorkshire Dales B8AJ9D first light on the autumn colours at Arncliffe in Littondale, Yorkshire Dales National Park, England, UK Alamy Stock Photo The UK's National Parks Ribblehead Viaduct, Yorkshire Dales B3W418 Steam train crosses Ribblehead Viaduct railway North Yorkshire dales. Image shot 08/2008. Exact date unknown. Alamy Stock Photo The UK's National Parks North York Moors Hood Hill and Roulston Scar as seen from Sutton Bank Alamy Stock Photo The UK's National Parks Dartmoor Sunset over Arm's Tor Alamy Stock Photo The UK's National Parks Porlock, Exmoor BWERB8 A wild pony on the moors above Porlock in Exmoor, UK Alamy Stock Photo The UK's National Parks Valley of Rocks, Exmoor D97K63 Towering cliffs at Valley of Rocks, Exmoor, Devon, England. Summer (July) 2012. Alamy Stock Photo The UK's National Parks Hope Valley, Peak District BXMY4H View Over The Hope Valley from Mam Tor at Sunrise, Peak District National Park, Derbyshire, England, UK. Image shot 2010. Exact date unknown. Alamy Stock Photo The UK's National Parks Tarr Steps, Exmoor C7TKW3 Tarr Steps clapper bridge, Exmoor National Park, Somerset, England. Summer (June) 2011. Alamy Stock Photo The UK's National Parks New Forest B9WCD3 Sun shinning through Backlit Trees in New Forest National Park Hampshire England Britain UK Alamy Stock Photo The UK's National Parks Red deer stags, New Forest B4DGNH Young Red Deer Stags in the mist Alamy Stock Photo The UK's National Parks South Downs Sunset over Fulking Escarpment Alamy Stock Photo The UK's National Parks Stanage Edge Escarpment, Peak District C91RE3 Stanage Edge escarpment and views of countryside in autumn, near Hathersage, Derbyshire, Peak district, England. Image shot 10/2011. Exact date unknown. Alamy Stock Photo The UK's National Parks Brecon Beacons Sunrise over Llangattock Escarpment Alamy Stock Photo The UK's National Parks Snowdonia Mt Tryfan and the Ogwen Valley as seen from Glyder Fach Alamy Stock Photo The UK's National Parks Pembrokeshire Coast The view towards Elegug Stack Alamy Stock Photo The UK's National Parks Norfolk Broads Thurne Mill on a misty afternoon Alamy Stock Photo

While giving evidence to the committee, energy minister Richard Harrington compared the idea to a proposed potash mine near Whitby in North Yorkshire, which is within a national park.

“I am not saying we should have them on national parks, but it would be very wrong to exclude them at the moment in this big policy statement,” he said.

Nuclear reactors generate around a fifth of the UK’s electricity, but almost half of the current infrastructure will no longer be in use by 2025 as old plants are decommissioned.

Government advisers, the Committee on Climate Change, have made it clear that nuclear power plants will be a key component in meeting carbon emission targets, and major new plants are in development.

However, ministers have struggled to find communities willing to play host to nuclear waste facilities.

Cumbria was a prime candidate, with some suggesting the radioactive materials could end up in the Lake District, but these efforts stalled in 2013.

This led to the government laying out a draft national policy statement in January detailing its approach to geological disposal infrastructure (GDI) – the systems of vaults and tunnels required to store the most toxic radioactive material that cannot be stored above ground.

The committee said they supported the government’s view “that it is conceivable for a GDI to be designed in a way that would be acceptable to communities, preserve the socioeconomic benefits that national parks and AONBs currently bring them and avoid any intrusive surface facility in conservation areas”.

However, environmental groups said they hoped the government would reconsider this position.

Ruth Bradshaw, policy and research manager at Campaign for National Parks, gave evidence to the committee in July, and said it was “completely wrong” to use the Yorkshire potash development as justification.

“The proposed nuclear storage facility is completely contrary to the purposes of national parks and we are extremely disappointed that the committee has failed to recognise this,” she said.

“Excluding national parks and AONBs as possible locations would support the Government’s ambitions for these areas as set out in the 25 year environment plan.”

Caroline Lucas, co-leader of the Green Party, said the thought of burying nuclear waste in national parks was “outrageous” and said it was evidence the government should not invest in further nuclear infrastructure.

“The future is in clean, renewable energy like wind and solar,” she said.

A BEIS spokesperson said: “We welcome the valuable input of the BEIS Select Committee into this process and its agreement that sufficient safeguards exist for our national parks.”