Posting this for anyone who isn't aware given most people will be drinking more at this time of year...https://www.drinkaware.co.uk/check-the-facts/effects-on-your-safety/the-dangers-of-fake-alcohol
1. Place: Make sure you buy from a reputable supermarket, off licence or shop.
2. Price: If a deal looks too good to be true, it most probably is.
3. Packaging: Look out for:
Poor quality labelling, including things like spelling mistakes.
UK duty stamp—spirits in bottles 35cl or larger and 30% ABV or higher have to have a duty stamp, which indicates that tax has either been paid or is due to be paid on the contents of the bottle. They’re usually incorporated into the label or stuck on the glass. If it’s not there, it’s illegal
Properly sealed caps. If the seal is broken, don’t drink it. Even if it’s not illegal, it could have been tampered with.
Fake bar codes. If you have an app on your mobile that scans bar codes, scan it and see if it’s listed as the correct product.
4. Product: Look out for fake versions of well-known brands and be wary of unusual brand names you haven’t seen before. Vodka, the most commonly counterfeited spirit, shouldn’t have any white particles or sediment in the bottle. If you see this, the vodka could have been diluted with tap water. If any alcohol tastes or smells bad, don't drink it. Particularly look out for the smell of nail varnish.