Sounds like double the red tape in the mid-term
Any business that exports to Europe or pursues contracts in Europe (and I expect that most manufacturers will want to sell there) will have to meet UK standards as well as EU standards. This suggests to me that they'll have to certify on both sides of the channel involving substantially more overhead than they had before brexit...and if they're particularly unlucky, the UK and EU requirements may be incompatible and they'll need to have two separate SKUs in order to ship into both markets...I can't really see where this will help any business bigger than a local mom and pop...