Kevin fell off the bike near the town of George, 155 miles east of Cape Town, while riding on a gravel road in dusty conditions. He was pronounced dead at the scene.

Recording a verdict of accidental death, the coroner said because nobody saw the crash there was insufficient evidence for him to say whether the bike, the road, or the weather conditons played any part in his death.

BMW did not release a technical report on the R1200GS Kevin was riding at the time.

After the inquest, Mrs Ash said: “I believe BMW owe it to Kevin, myself, and to our daughters to reveal what they know about Kevin's accident.”

“If anyone deserves to know why Kevin died, it is us,” she added.

For a full report on the inquest, see next week's papers.