Many voted for Brexit to restrict immigration from the rest of the EU and they at least have got what they wanted. The fact that such immigration was very good for the UK economy, means the country will suffer as a result. That is a total loss which can’t be made good, but business organisations are looking to improve the deal and the handling of the deal, in the hope that some losses can be reversed.
The British Chambers of Commerce even has a list for the government to tick off.
Simplify processes
Work with the EU to smooth difficulties
Subsidise companies so they can adjust to red tape.
Return to negotiations to get a better deal
The first two are nice but probably only capable of marginal changes, this is the deal the UK wanted after all. Giving companies money to deal with government imposed red tape, is the exact opposite of what Brexit was supposed to achieve; but then so are a lot of things.
On the final wish you have to ask the big question. What has the UK to offer? The UK got the deal it got because it didn’t ask for many things that British business wanted, because its own red lines made them impossible. It put political and idealogical fantasy ahead of facts and reality. The drop in immigration shows that better than anything else, it is harmful but what the Brexit supporters wanted.
The UK will get a better deal when it abandons its red lines and there are no signs that is going to happen.
https://jonty.substack.com/
The redlines are redlines to stay. Sovereignty is not fantasy as the EU 26 will discover when Germany implements Angela Merkel Fiscal Union of all 27 states into one country.
Immigration is cheap labour for entrepreneurs so they can make a good profit. Reopening negotiations is unlikely as the EU believes they have us where they want us. There are however 160 other countries in the World who could supply human resources.