The company, Infosys is his father in laws (his wife does have shares), and as far as I can see there is no link between this IT contract and North Sea oil rights. But maybe I'm wrong and it a simple bribe, but I doubt it.
Fundamentally though, a billionaire should not be a political leader, too much opportunity of corruption or the appearance of it.
Its not bribery, by any means, but I think its definitely noteworthy that these pressures / considerations may be involved
Quite the contrary, the richer a person is, the harder they are to corrupt (both in theory - need more money to sway them - as in practice - much cheaper to corrupt someone else), and the less they care about being corrupted (they can afford to follow their principles, e.g. Musk buying Twitter even though it doesn’t make financial sense, or Gates giving his wealth away).
That is quite a lot view of non-rich citizens. A lot have morals as baseline for corruption, beyond the cash / assets we hold.
Perhaps by outside forces, but what about corrupt practices that furthers their own private interests in exclusion of the e.g. country they're leading?
to a certain point
obviously if the only thing a person cares about is "more money" (which, in a billionaire's case, is self-evident), you can assume they'll do _anything_ for _even a little bit_ of money
see: extremely wealthy people never tipping
Everyone says "everyone has a price" but we have examples of normal people being given the opportunity to have way more power and giving it up for the greater good (for example, smedly butler who was supposed to become some sort of supreme leader in a fascist plot, but turned the conspirators in instead, and basically got no reward for doing so, and the conspirators largely went unpunished)
The public at large see a rich person with an opportunity to grow their wealth through politics. You may well be right, and that is the (original) concept behind the House of Lords, but as with everything in politics its appearance that matters.
Also it's not always about them being corrupted, it can be them as the corrupting force.
I would say: beware of the principles of those who wield power and have little common cause with you.
Another way to look at it is that they're _more likely_ to be corrupt because they have an insatiable appetite to amass as much money as possible. They're "wired differently" from the average person.
Anyone who is a billionaire has enough money that they could cease working and live in extravagant wealth the rest of their life.