Phil O(Offline)

What are the minimum requirements for labelling cylinders in the UK?

I ask because I've just built myself a twin set and it looks great with no labels. If I go to my LDS I will end up with a massive Nitrox or trimix label, an O2 sticker the size of a small car and my nice clean cylinders will be treated as free advertising space for them. I much prefer the cylinders to be white with no reading material at all.

Thanks

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Phil