Nigel. Of the two "benefits" you list, the first is possibly worth up to £33m. A drop in the ocean (pun intended) compared to the costs of brexit so far. The second is no different to the border controls we had as part of the EU. So, in a nutshell, no benefits at all :-(

FWIW, I am of the opinion that rejoining the EU is not an option. Firstly, they will not take us back and, secondly, as we have seen since 2016, the subject is too divisive. I am firmly a believer in the EU but I accept that a large part of the electorate will be alienated by going back to 2015. However, leaving things as they are is not an option either. Leavers need to accept and admit that brexit has been a disaster so far and looks likely to be so for a long time to come. As a nation we need to work closely with the EU in a cooperative and positive way. Whatever government is in charge after the next election needs to work hard to build bridges with Brussels and stop the confrontational nonsense that we have seen for the last few years.