BLACKADDER star Tony Robinson and his Time Team were digging up a school playing field in Northwood last week.
The Channel 4 show was filming an excavation of a Tudor manor house that lies under the rugby field of Northwood Preparatory School in Manor Park.
They found remains which show that the house was 'perhaps more grand than Hampton Court'.
An English Heritage site, the manor was once home to King Henry VIII's chancellor, Cardinal Wolsey, and was considered more important and imposing than Hampton Court. It was also home to Katherine of Aragon, Henry's first wife, after their divorce.
Head teacher at the boys' school, Dr Trevor Lee, said the finds made by the team had been 'extraordinary'.
He said: "The team were at the school all week and it was great for the boys, who really enjoyed it.
"Some of the finds were staggering and the remains of the manor house, in the view of the experts, showed that it was perhaps more grand than Hampton Court.
"Other finds included a silver penny from the reign of King Henry V that was minted in York between 1410 and 1420."The theory is that it could have been a labourer who dropped and lost his pay."
The history of excavation at the site dates back to 1955 when a man called Martin Biddle first discovered the remains.
No funding could be found for a proper dig until Time Team was called in by the school. The playing fields will be restored and the remains covered over once again, as this is the best way to protect ruins.
The programme featuring the Northwood dig will be aired in the autumn as part of the new series.