Having looked at a couple of websites, I am assuming that some of your products are made of textiles, in which case your products will need to be marked following the rules of marking for textiles in the EU Directive 2008/121/EF
I have a PDF copy of the BIS publication which explains this directive quite clearly - I don't think I can attach it here, but if you would like to contact me with your email address, I will email it to you.
If you are using other packaging, then as the products are consumer goods, there are also regulations on what information needs to be provided.
Information on labelling of consumer goods can be found at:
As this is in Norwegian only, Google Translate gives a reasonable translation - :
UK Trade & Invest - South West