I didn't know about the Duchy of Lancaster.
Until 1993 income from this was tax free.
I feel sad that people think this is OK. Surely we should pay the RF a reasonable income and everything they own from this kind oc inheritance should revert to the state. I'm no expert so maybe my view is simplistic.
en.m.wikipedia.org/wiki/Duchy_of_Lancaster
An interesting read, an excerpt....
As the Lancaster inheritance, the estate dates to 1265, whenHenry IIIgranted his younger son,Edmund Crouchback, lands forfeited bySimon de Montfort, Earl of Leicester.[citation needed]In 1266, the estates ofRobert de Ferrers, 6th Earl of Derby,[16]another protagonist in theSecond Barons' War, were added. In 1267 the estate was granted as the County, Honour and Castle of Lancaster. In 1284 Edmund was given theManor of Savoyby his mother,Eleanor of Provence, the niece of the original grantee,Peter II, Count of Savoy. Edward III raised Lancashire into acounty palatinein 1351,[citation needed]and the holder,Henry of Grosmont, Edmund's grandson, was created Duke of Lancaster.[citation needed]After his death a charter of 1362 conferred the dukedom on his son-in-lawJohn of Gaunt, Earl of Lancaster, and the heirs male of his body lawfully begotten for ever.