Five members of the same family have all been jailed by a judge at Bristol Crown Court for conspiracy to require a person to perform forced or compulsory labour.
William Connors, 52, has been jailed for six and a half years and his wife Mary, 48, received a sentence of two years and three months.
The couple's son, John, 29, was jailed for four years. Their other son James, 20, got three years detention in a young offender institution.
Son-in-law Miles Connors, 24, received a three year prison sentence.
More top news
The government has announced plans to ensure staff receive tips left by customers in bars and restaurants.
Tens of thousands are having do not resuscitate orders imposed without families' consent, according to the Royal College of Physicians.
The prime minister has said the debate over Britain's EU membership has affected his long-term friendship with the mayor of London.