It's not something anyone wants to think about, but as tensions escalate around the world, there is a non-zero possibility that World War 3 could happen within the next decade. The Israel-Palestine conflict continues to rage, and at the same time, Putin refuses to back down from his illegal invasion into Ukraine, with no end in sight to the war, despite the Russian leader's recent meeting with Donald Trump.
This summer, the UK government told people to prepare for war on British soil, and is urging better preparedness for conflict across society. Assuming tensions continue to ramp up and a new global conflict were to erupt, there are some indicators about what would happen if the UK went to war and needed to introduce conscription.
https://www.express.co.uk/news/uk/2097958/conscription-age-men-ww3-breaks?int_source=nba