howabout "Calleach I don't think per head figures are particularly relevant in the context of the overall dent in the EU budget the UK leaving will create"
Hmm. I don't think it is a simple matter of the pay in either. The overall EU budget is large. I presume you can spread it out among the remaining countries when you also take into account the dividend.
The 2 EU agencies in London will relocate and bring that cash back into the EU. Buildings, wages, hospitality for thousands of people involved in meetings of committees and groups. HQ's and offices etc., maybe research budgets and their personnel.
The financial sector may be bringer of big bucks with all it is comprised of. It will interesting to see how that goes.
The UK won't be a gateway to the EU anymore for international organisations. Relocation could bring a lot back in. We don't know what will happen to manufacturing in the UK.
That is just at a glance. It will be interesting how it develops. The EU said it is committed to protecting the interests of its citizens. Economic as well. That is looking at it from the EU prospective.
Of course, the UK will be looking to develop it's economy outside the EU. But the EU will have 400million people in their market and anything the UK has to offer will not be as a gateway to that market like now.
Of course the EU will have to reorganise, but I imagine they are will over the stages of grief by now and there may be some returned benefits back into the EU27 to soften the blow.