Hello – I think it’s probably lonicera fragrantissima – a winter flowering honeysuckle. Smells divine but makes an untidy plant. Worth it though for that scent. Enjoy the rest of your Somerset weekend.
Let’s hope they’re right! It’s very pretty, whatever it is. I asked about a plant that appeared in my little garden last year, and everyone plumped for viburnum. Sadly, it turned out to be an escape of my neighbour’s very ugly and invasive cotoneaster, such a dull municipal plant…..