I'm aware it's not on Aim Eco, that's why I said Aminex fall into the Irish band, sorry if I didn't make that clear, I'm not that that good at explaining things.
Stamp duty on shares purchased in the UK are 0.5% while in Ireland they are 1% as Aex are registered in Ireland they fall into this band, there is no stamp duty on AIm shares usually.
It must be tough being a professor with a large portfolio a fleet of vintage cars properties in France etc etc etc, I'm surprised you have any family life after all the effort and time spent on Aminex.