If Brexit has any impact (which is unlikely, but admittedly still unclear[1], [2]), incorporating again in Ireland or France is very easy and has similarly-minded regulators.

[1]: http://researchbriefings.files.parliament.uk/documents/CBP-7...

[2]: https://www.ft.com/content/afff45a0-1597-3f1c-a6da-79c3f61e6...