The estate has undergone significant work since coming under the ownership last year of multibillionaire vacuum cleaner magnate James Dyson for a reported fee of €30 million.

Neighbours of billionaire James Dyson have appealed against his plans to build a helipad on his estate

James Dyson bought Ballynatray House and its 850-acre estate for €29.25 million last year

Dyson is owned by billionaire James Dyson and is best known for the invention of the bagless vacuum cleaner.

Olivia Humphreys, 24, from Limerick, came up with the invention Athena after her own mother’s battle with cancer.

James Dyson is understood to be the new owner of Ballynatray House in Co Waterford