Royal wealth Richest and poorest rulers worldwide

Richest

King Maha Vajiralongkorn of Thailand £34bn

Hassanal Bolkiah, Sultan of Brunei £22bn

King Salman of Saudi Arabia £14 bn

Khalifa bin Zayed, Emir of Abu Dhabi

£12 bn

Mohammed bin Rashid almaktoum of Dubai £11bn

Poorest

King Felipe VI of Spain £2.2m

King Abdullah of Pahang, Malaysia £800,000

King Letsie III of Lesotho £800,000

King Norodom Sihamoni of Cambodia £800,000

King Jigme Khesar Namgyel Wangchuck of Bhutan £400,000