No 'over-mighty subjects' left after Bosworth who could unseat the king
Henry had few close relatives of the type who had caused trouble during the Wars of the Roses. He had no brothers, no adult children before his death and only one loyal uncle
The nobles who fought against him were 'attainted', but allowed to win back lands and titles only gradually, through loyal service
Bills of Attainder were widely used to deal with opponents in the fifteenth century. The accused was denied a trial and was declared guilty by Act of Parliament. Life, property and titles were all forfeit
The Earl of Lincoln, who was loyal at first but then joined Lambert Simnel, was killed at Stoke in 1487
The Earl of Northumberland was killed in a brawl in Thirsk in 1489 leaving a minor to succeed him. Government of the North was entrusted to the Earl of Surrey, who had no lands in that area
Sir William Stanley, Henry's Chamberlain was executed in 1495 for negotiating with Warbeck
The Duke of Buckingham was a minor