Ref the CPTPP, the main benefit of joining it is strategic in that it will help us in other trade agreements and will help us be able to have an influence on who else joins the pact (China and Taiwan have apparently applied). Its a first step, but a major one.
People have asked for benefits and I've given one. No, its not huge but its potential ramifications could be.
Oh and pinkgreentrousers, I voted for Brexit. I was sick of the way Greece was being treated and I felt that with the ability to make our own agreements (including with the EU who haven't stopped trading with us), that we could start making Britain better rather than - what felt like - helping more and more countries who were struggling and propping up the German economy.
No, its not gone great and has taken a lot longer than I expected. I think COVID and the Ukraine war have a lot to blame for in that respect and also that I dont think anyone in power expected it to happen and they were caught cold. The politicians have also been too busy infighting and replacing leaders which hasn't helped and as I said we were in a bit of a mess before Brexit (look at the charts and you can see that economically we fell against the rest of the G7 prior to Brexit.
Anyway, there are benefits and I feel that more will come once the world stabilises. I dont think slagging each other off and accusing people of being racist if they voted Brexit is helpful. I voted not for my own benefit as I realised it would get worse before it got better, but for my children.
Maybe the future will show I was wrong, but I did what I felt was the best thing at the time. For me personally, COVID and the Ukraine invasion have had a far greater impact on my life than Brexit to date.