Best union for copywriters?

[Gwdiwho]

I am an in-house copywriter for a rather large, corporate organisation. Any recommendations for the best union for me to join?

If you do a google search then you'll find a few options, but they are all very small, so how useful they might be I couldn't tell you. If one of those doesn't appeal, I would suggest UNITE, which is large and has a wide range of services - and has general workers sections for those in smaller / less well reprersented industries.

Here you go

The TUC website has a union-finder tool.