LetItSnow! I know what you’re saying, there were indeed hints of spring like daffodils coming out, and birdsong on a few days etc but all things considered, it just wasn’t spring like overall… not this side of the country anyway. Maybe different in London, which wouldn’t surprise me.
For me it’s considering things like light levels which were equivalent to October, rainfall and frequency of Tm airmasses which were more typical of October, and the temperature profile which was often typical of October.
A zonal spell in March, while I’d expect to be quite stormy, I’d also expect to be a lot brighter and not so balmy. Indeed, some of the weather this March felt more akin to October/November.