When it comes to the EU there are four main gas pipelines:
1.)Nordstream 1
2.)Nordstream 2
3.)Yamal through Poland
4.)The one through Ukraine.
Nordstream 2 is offline permanently. The Yamal pipeline was shutdown as Poland refused to pay for gas in Rubles and had an LNG terminal so relied on reverse gasflows from Germany(ironically using gas from Nordstream 1) for extra gas it required and Ukraine accused the Russian separatists of stealing gas so shut down that one:
Ukrainian authorities accuse Russian forces of interfering with gas infrastructure.
www.politico.eu
So with 3 our of 4 pipelines out of action,Russia now using maintenance and sanctions as an excuse to muck about with gas supplies for leverage. Apparently millions of pounds of gas are being burnt off a day:
Experts say rate of gas flaring at Portovaya plant is unprecedented, and raise concerns over emissions
www.theguardian.com
Then a major US LNG terminal exploded last month:
The explosion that shut the Freeport LNG natural gas export facility in Texas last month created a 450-feet-high fireball and happened on a section that had been inspected several weeks earlier, according to a report.
www.bloomberg.com
In the case of the UK we should be OK,but the Conservatives fully privatised North Sea Oil and Gas,so it means we are exporting gas to Europe which we need. Then the government was not interested in maintaining our LNG storage capacity so 70% was shut down in 2017! This means we can't even store our LNG or North Sea gas during the summer when its cheaper,so we ended up exporting it to the EU:
Britain’s goods exports to EU a record £16.4bn in April despite impact of Brexit
www.theguardian.com
GB became a net exporter of electricity for the first time in the second quarter of this year, while EU gas prices continue to soar.
www.powerengineeringint.com
IIRC,at one point we had too much gas so had to sell it off at relatively low price:
Britain is awash with natural gas imports, but with the heating season at an end and a lack of storage facilities, it has few outlets for the fuel.
www.bloomberg.com
The reality is that the UK has been screwed by poor government policies. The UK has some of the highest energy bills in Europe now(even worse than Germany IIRC) even though we don't really on Russian gas and oil.