What colour tights ....?

I find nearly-black or pewter tights are very versatile and go with any colour shoe/outfit - but they need to be good quality and sleek looking.

You must wear tights for the wedding!

Tights

Navy to match the shoes or nude?

You really must wear tights
IMHO. Bare legs not a good look at a formal do!

Very very sheer navy tights/hold ups or nude.
Bare legs in winter are not a good look and not suitable for a formal do.

Navy tights will ring the whole outfit together ??

If it all looked good with bare tanned legs then go for very sheer tan coloured tights thereby giving you a finished look all round.

Yes, navy tights but not the dark thick type.

You will freeze! Thermal tights - or a trouser suit!

I'd go navy tights or nearly black but very sheer.

Definitely tights for warmth and a smarter look. I agree navy or nude.

I think nude tights would look right.
I once saw a MOB at a winter wedding who was wearing the most beautiful outfit but she was not wearing tights and ner legs were mottled with the cold, what a shame.

I agree nude or if you want a tanned look, then tan tights (subtle though, not like you've been in the tanning booth)
Not navy IMO as the outfit would look too dark, Think navy shoes, navy print, navy bag.

Dark navy tights that exactly match your shoes, or sheer flesh colour. Not bare legs.

Bare legs with goosebumps is so not a good look!

Navy tights are over-kill for the outfit you describe. Go with sheer nude with a slight shimmer.

Think people look silly in the depths of winter with bare legs, especially at a wedding. Tanned bare legs look great in the summer, but definitely tights this time of year. Try both navy or nude to decide which looks better.

Wear sheer tan tights and add a pair of those little footies that don't show above your shoes - an extra layer for warmth without looking as though you are about to start shovelling snow.

Thanks ladies, tights it is then! Where's the best place to buy good quality sheer tights in the UK?

Have a look at the link I posted - so many to choose from.

snagtights.com/
I was told about this site on gransnet and the tights are really well fitting, they don't ride down.
Lots of colours to choose from too.
Enjoy your winter wedding!