Abolish the Monarchy

Financial assets known as bona vacantia, owned by people who died without a will or known next of kin, are collected by the duchy. Over the last 10 years, it has collected more than £60m in the funds. It has long claimed that, after deducting costs, bona vacantia revenues are donated to charities.

However, only a small percentage of these revenues is being given to charity. Internal duchy documents seen by the Guardian reveal how funds are secretly being used to finance the renovation of properties that are owned by the king and rented out for profit.

Among 18 to 24-year-olds, only 30% say the monarchy is "good for Britain", compared with 77% among the over-65s.

The survey of more than 2,000 adults in Britain comes as the first anniversary approaches of the death of Queen Elizabeth II.

The pollsters found that overall, 62% want to keep the monarchy.

But they report a "remarkable difference between generations", with younger people much less supportive on remaining a monarchy and more sceptical about the Royal Family representing good value for money.

For King Charles, as he approaches his first year on the throne, 59% of people thought he was "personally doing a good job".

The pollsters say there has been a broadly consistent picture of "overall positivity towards the monarchy", but there is also a sizeable and rising minority who are opposed.