Question

why did the British preserve their official record where can we find this today

Answer 1

Britishers preserve their official record from the Indian revolutionary people .At that time ,Indian people protest against britishers for their freedom.So ,they always had fear from indian men for any mishappening.

We can find this from British Library in London,
Gandhi sangrahalay, from many documents etc

Answer 2

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British had preserved official documents, because they thought if they write and record everything, it will later be easier for them to study them and debate. They kept official records of what they thought was right, so that in the future, those records can serve as proofs of all the decisions that they had taken.