Where does Britain get its gas from now?
The UK largely sources its gas from fields in the North Sea and Irish sea, which along with other reserves in British waters provide around 50 percent of the country's supply.
Another significant portion is made up of European imports, with a pipeline across the North Sea from Norway to the UK being by far the largest source - 20 percent - from the continent, with both The Netherlands and Belgium also supplying the UK with some of its gas.
Further afield, another 20 percent comes from Qatar and the wider Middle East. The US also supplies the UK with some Liquefied Natural Gas (LNG).
By contrast, gas imports from Russia make up only around five percent of the UK's total usage. But Moscow has a grip on Europe's gas supplies.
What's happened to our North Sea supplies?
Production in the North Sea has dwindled because older gas fields have become too expensive to run, and new ones have taken a long time to come on stream.
Last year about 48 per cent of UK gas came from the North Sea, down from 100 per cent in 2004, and this is projected to keep falling.
If the Government does not subsidise investment, then by 2025 domestic gas will only meet around one third of UK demand, making the country even more reliant on global markets.
Wayne Bryan, director of European Gas Research at Refinitiv, said: 'There are untapped gas fields in the North Sea, but more investment is needed. There are three or four new gas fields starting early next year, but we've seen falling investment in the last 18 months.'
What's happened to fracking?
The Government halted fracking in England at the end of November 2019 after a series of confrontations between shale gas companies and local communities.
Supporters claim there is enough shale gas in the UK to support the country's needs for decades.
Fracking has boomed in the US, making the country a powerhouse in global oil and gas production and securing its
