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Distributors will need to take more responsibility for the products, and for ensuring that the assessments and AVCP requirements have been carried out and that the correct conformity marking and labelling is correct on that product. This will naturally depend on exactly what your position is as a distributor, where the product is manufactured and where you intend to distribute it.
There will be no additional responsibilities to a distributor if someone has already placed a good on the UK or EU market before you sell it in Great Britain.
Note: Distributors will have to get this in place for materials already on the market, as CE Marking will continue to be valid in the UK, but will be replaced by UKCA Marking in the future.
If you are distributing a new product covered by a UK Designated Standard that is being placed in the UK market for the first time, you will have to apply UKCA Marking.