So, here is the question. How do you know that the destroyed documents contained evidence of unethical or illegal activities? The assumption you are making is that those people must have undertaken immoral or illegal activities. Your preposition is that you simply know better ... But I strongly suspect that you don't. If illegal activities were undertaken on such a wide spread scale, please show me the evidence of people being brought to either civil or legal proceedings because of this the recent Bloody Sunday and Hilsborough trials should be sufficient indicators that the government is happy to bring people to account for crimes committed decade ago, even if they are soldiers or policemen.
Easy-Kill, your reasoning would be right if I was working from assumptions, but I am relying on evidence in the sources cited by WP:
The Independent said:
Among the documents is a memo from London that required all secret documents held abroad to be vetted by a Special Branch or MI5 liaison officer to ensure that any papers which might “embarrass” Britain or show “racial prejudice or religious bias” were destroyed or sent home.
The key words, which
a national newspaper said were taken from a primary source were "racial prejudice or religious bias”, because they are bad things and any British official using those words since WWII (before WWII is different) must have seen them as bad things.
The same article also raises the Batang Kali case, where records were destroyed:
Relatives of 24 Malayan rubber plantation workers allegedly murdered by British soldiers in the Malayan village of Batang Kali in 1948 returned to the Court of Appeal this week to try to overturn a ruling that the British government cannot be held responsible for the massacre....
Most of the records of the original investigation into the killings were destroyed, most likely during the eight-month period that included the sending of the lorries to Singapore.
A memo recording the destruction operation in 1957 notes that the MI5 liaison officer overseeing the operation believed that as a result “the risk of compromise and embarrassment [to Britain] is slight”.
The relatives asked HMG for an investigation, but they said it was too long ago. The relatives used all to the way to the Supreme Court, which said the ECHR didn't apply to the 1950s. to
A Guardian article notes:
Lord Kerr, one of the [Supreme] court’s justices agreeing with the majority, said the “overwhelming preponderance of currently available evidence” showed “wholly innocent men were mercilessly murdered and the failure of the authorities of this state to conduct an effective inquiry into their deaths”.
He added: “The law has proved itself unable to respond positively to the demand that there be redress for the historical wrong that the appellants so passionately believe has been perpetrated on them and their relatives. That may reflect a deficiency in our system of law. It certainly does not represent any discredit on the honourable crusade that the appellants have pursued.”
So we have a crime and a conspiracy to cover-up. I'm not talking about an Empire-wide conspiracy to cover up (my language on this has been confusing, apologies). The general rule of 'cock-up not conspiracy' applies here as elsewhere. But there were many local conspiracies around particular events which form a general pattern of racism, incompetence and cover-up. One of those was high-up in London, with Empire-wide effects.
The Bloody Sunday and Hillsborough inquiries happened because there was political pressure within the UK (Andy Burnham deserves particular credit for the latter). There isn't similar pressure for some colonial atrocities, so there is no inquiry.
And BTW I completely support protecting material that would have got local informants into danger. But the
destruction of material related to former terrorists to protect people's careers was terrible intelligence work.