BashfulBob:
I cannot think of any country that was colonised during her reign. In fact, the last 70 years have been a period of unprecedented decolonisation which saw the dismemberment of the British Empire.
Unfortunately, not entirely so. Check out Philippe Sands' recently published 'The Last Colony' which relates how at the end of the 1960s the whole population of the Chagos Islands in the Indian Ocean, some 1,500 people, were forcibly deported from their homes by British colonial authorities and sent off to live elsewhere. Their homes and many of their possessions were abandoned, their pets rounded up and killed. The reason for this was that Diego Garcia, the one of the largest of the Chagos, was demanded by the USA for a military airbase.
Ever since then the islanders and their descendants have been fighting to return to their home. In 2019 the International Court of Justice ruled that Britain's detachment of the islands from Mauritius, of which they formerly formed part, was illegal, as were the deportations. The UK Government continues to ignore this ruling.
Nothing to do with the late Queen, of course - but it shows that arrogant British colonialism is, regrettably, not yet entirely dead.