Terrific thread.
My MIL was a single woman in her early 20s when the war started. She worked for the Post Office Savings Bank (now NS&I) in West Kensington, which would have been a protected occupation, as they were raising government funds to pay for the war effort, so she was never conscripted. She lived with her parents in Northolt. There's a longstanding RAF airbase there, so the area must have been a target for bombers.
I never thought to ask her about the war when I had the chance, and sadly she died nearly 30 years ago now, and had dementia for several years before that.
I do know that her twin brother served in the Navy during the war, but sadly fell ill and had to be invalided out. My memory is that he contracted a tropical disease while in West Africa, but my husband thinks he developed MS. Whichever of us is right, he ended up in a hospital somewhere near London where he sadly died not long after the war. He had married, but had no children, and my MIL commented bitterly that his wife never bothered to visit him. They didn't stay in touch after he died.
There must have been lots of marriages that came to grief during/after the war. Long separations, all sorts of other stresses. Many people struggled to re-adjust to civilian life after the excitement/responsibility/companionship of their wartime work. Plenty of PTSD around too, of course.
My FIL's first marriage was another casualty. We don't know when he married, whether it was before or during the war, but he was divorced not long after it ended. No children, so probably quite a short-lived marriage.
Before the war, he worked for his father in SE London. GFIL ran a small business making good quality ready-to-wear garments for sale in clothing shops. When the war began, he was offered a contract making garments for the military, but turned it down as the prices offered were so low he'd have made far less profit than he was used to. This was a very bad move. If he'd taken the contract his workers, including both his sons, would have been classed as doing essential war work and wouldn't have been conscripted. As it was, all his workers were classed as doing non-essential work, so they were mostly conscripted, or joined up, and because of rationing, he struggled to get materials and would only have been able to produce garments to utility standards anyway, probably also at a very low profit. End result, he closed the business, and both his sons got conscripted.
My FIL went into the RAF and trained as a mechanic working on repairing engines and the fabric of planes. At one point he was transferred to work in a munitions works instead. He ended up in France after D-Day and spent months in Belgium until the war ended. He was fortunate not to be injured as far as I know. Hard work, but nothing like as bad a war as many others.