We are going to London in January for my husband's work. We'll have our 3 kids, ages 12, 9 and 8. We've been to London before for work and are considering splitting our time in another city or country. Any suggestions? Because of work, we'd end up doing a pretty even split on a 8-9 day trip. We've done several of the "big" London things, but there is always more to see and we took it easy and slow last time because our kids were much younger.
If your 8-9 days doesn't involve arrival and departure days, I might consider taking the Euro to Paris. Otherwise, I'd probably just stay in London where you'll have time for day trips.
I agree with KD. Given the time of year, sticking to a big city with lots of indoor options seems wise. And Paris is a logical choice. Even better if you get multicity flights into London and home from Paris.
Stay in the British Isles, Scotland, Wales and Ireland are wonderful.
We did a great 4 week trip in 2017 of S. Wales and England, with no large cities. We visited places like Bath, Cardiff, Tenby and St. David (Wales), Glastonbury, Wells, The Cotswolds, Oxford, Blenheim Palace, Stratford Upon Avon, Warwick, Pickering, The Yorkshire Moors, York (this city is amazing), Durham, Hadrian's Wall, The Lake District, Winchester, Salisbury and Cambridge.
The UK countryside is amazing.
I am with KD and geovagriffith… and am particularly fond of Wales. That said, if you don’t mind flying to the second destination, you have so many options! Maybe Barcelona, for a change of weather, amazing food, arts/culture and the beach?
Or head to Brussels, or Copenhagen! Northern destinations can be mostly tourist-free and surprisingly fun and hygge and cozy in the winter.
But if you do want a sunny change, again… Barca, Rome, Nice, Porto… they are all worth thinking about.
I live in London. There is so much to do that in the time you have, you will not exhaust your options. Paris is, of course, an obvious and wonderful choice - but since small airlines serve Western Europe so efficiently, it is your oyster! :-)