Yes there is.
Moshiri can take care of his interests by delegating his board position by proxy to Ryazantsev.
Given that I'm a venture capital investor I have a proxy on every board of every company I'm invested in. My co-investor (through a joint investment vehicle) on my behalf as my proxy.
So I understand it very well.
So a venture capital investor as well as working in the legal profession.
There is no such thing as a proxy director as a proxy is to all intents and purposes a very limited power of attorney. (Proxies may be given with regards to votes etc). Even in offshore jurisdictions, nominee directors exist but not proxies.
You're UK resident and domiciled so your tax bill is on worldwide income - you may get DTR if applicable, but your income is taxable in the UK.
I'll pipe down when you desist from talking rubbish - simple as.