Suppose for a minute what you're hinting at is the truth: Iran ripped off British oil companies (hah!) in a strange case of reverse-colonialism, and it was totally unfair, and this even affected British civilians.
This still is in no way justification for toppling a democratically elected government and supporting a dictatorship. No matter what, commercial interests do not trump a country's rights. Even if Iran's oil nationalization had been completely unfair, Britain and the US would still be directly responsible for installing a dictatorship and indirectly responsible for Iran's "fall out with the West".
Suppose for a minute what you're hinting at is the truth: Iran ripped off British oil companies (hah!) in a strange case of reverse-colonialism, and it was totally unfair, and this even affected British civilians.
This still is in no way justification for toppling a democratically elected government and supporting a dictatorship. No matter what, commercial interests do not trump a country's rights. Even if Iran's oil nationalization had been completely unfair, Britain and the US would still be directly responsible for installing a dictatorship and indirectly responsible for Iran's "fall out with the West".