'So improved trade links and improved UK soft power only benefit the metropolitan elite?'
Yes, they help the multinational companies who lobby the puppets and on whose boards the puppets get invited. They benefit their mates, the consultants and banks etc but they use the people's money to do what you say is
"Foreign aid is mostly a huge bribe"
they don't use their own money, their own flipped homes profits or the profits of the companies that benefit, and lots of the top banks don;'t even pay any tax after all their clever accountants have sorted things out for them.
'Do tax cuts not give significantly more benefit to the metropolitan elite than they do the average British taxpayer.'
No because most of them pay little of it as they have their money in all sorts of schems, foundations and exempt setups. Ordinary people who are struggling to pay the ever increasing bills and cost of living need that extra tax money in order to keep their heads above water. the flipped home brigade aren't in that position.
'How can cheaper imports goods and improved exports not benefit the taxpayer? '
Because jobs are exported abroad which means less opportunity here and because the exports benefit thelobbying companies and charidees and salaries of the charidee class of failed ex-politicians rather than the people's tax money being spent on the people's services here.
'Diane Abbot is a hypocrite'
So what? What she has done is monor compared to some of the rest of them. Her policies are more attuned to Corbyn's and are different to the policies of the lobbied toadies.