If the HSE was tasked to look at any or all those things to ensure seamless chemicals trade with EU then it would look into it and make recommendations to the government. In fact it has been tasked with looking into some of those things - have a look here:
UK REACH: UK REACH Explained
Following Brexit the government needed to create new laws on the regulation of chemicals so that the trade in various substances between GB and EU could continue. Northern Ireland trade is being covered under the NI Protocol but that could change soon.
Anyway the HSE was tasked as the agency responsible for the implementation of the regulations (called UK REACH) and in 2021 it was announced that the first two substances to be reviewed would be lead in ammunition and certain chemicals in tattoo inks: emulating similar reviews in the EU. Many more substances have since been reviewed and some banned.
The approach the HSE has taken, and is taking with its other reviews, is looking at the risks and investigating where it is feasible to reduce those risks to a ‘nil or negligible’ level.
We could blame Brexit but on the other hand if it were not for Brexit we would be facing even more draconian EU lead ban proposals than those currently proposed by the HSE – but in any case we are also fighting those proposals as FACE members.
The HSE does not create laws, it can only make recommendations and submit these to the Defra secretary of state for consideration. The government may decide not to act on the HSE recommendations.
As mentioned earlier we have made progress on lead airgun pellets and lead rifle ammunition, but nothing can be taken for granted and more work is needed for all shooting disciplines.
Furthermore, BASC has said that if it has concerns that any resulting legislative proposals are disproportionate and will damage shooting, we will lobby for them to be revised.
I have spent a fair bit of time on here explaining things so
@Smellydog a bit of support and trust that we are trying to do the right thing in the face a challenging and complex issue would be much appreciated.