Feb/March in the UK is still cold.
Huh? That's just a matter of having the right gear. A good sleeping bag and a good insulating mattress (e.g. Thermarest) is critical.
I just returned from hiking the Yorkshire Dales, between Christmas and New Years. Spent four nights in tents, one in a B&B (because we had to catch an early flight the next day). Five males, one female - but she's the type that doesn't need a hairdryer.
The last day we were up on some moor and fine hail was blowing by horizontally. Fortunate we had a quartering tailwind so it was not directly in our faces. With the right gear none of us was cold or anything, so all in all a great time.
Having the right gear does imply mummy-type sleeping bags. They're great for insulation but sort of prevent the initiation in whatever mile high club you intend to join, if you get my drift, though.