Still seems to be available in the UK from selected retailers especially the neon version.
http://www.stockinformer.co.uk/checker-nintendo-switch
Doesn't seem like any problem here if you want one. I'm not talking about inflated price stock although that exists too just standard suggested pricing. Looking around some European sites, Italy seems to have stock, some discounted but Germany looks like waiting for stock.
Looks like its available for those who want it in most european countries with only some retailers waiting for stock.
Recent visits to local game shops didn't show a lot of focus on Nintendo Switch, most were still pushing PS4 as the primary console to buy with Xbox one a close second in some shops.
I think Switch may have its strongest support in countries like Japan, US, Germany and France.
Wierdly this article headline states how hard it is to buy a Switch in the UK and then lists how readily available it is in many retailers just not all.
http://www.express.co.uk/entertainment/gaming/794691/Nintendo-Switch-SALES-news-more-stock
You'd think a headline like that would include a punch up in a toy store fighting over the last available Switch story not a list of sites where to order.

Not trying to be negative but in the UK at least feels like the momentum is dying quite quickly. I totally accept in the US and other countries the story may be different. Maybe UK retailers have been wrong footed by how well the Switch is doing and haven't adjusted to it or simply lack of stock means they will not push the product instore for the simple reason they don't have stock to sell but in the UK at least it looks like stock levels have recovered/restored overall if you want one.