Henderson was at Kempton to oversee wins for Darlan, Chablais, Whoops A Daisy and Mossley - all ridden by Barry Geraghty - while Owen Glendower and Foxbridge - partnered by Andrew Tinkler - scored at Ludlow.
The David Bass-ridden Top Of The Range completed the Seven Barrows-based trainer’s clean sweep of the British tracks racing yesterday by hacking up at Ffos Las.
It is the first time a British trainer has saddled seven winners from seven runners in one day.
“I think that is the first seven for me, it’s certainly the first seven from seven,” said Henderson, who had five winners on Friday.
“We had a fantastic day on Friday with five winners and then Saturday was a bit bruising with Long Run and Oscar Whisky being beaten, but this is quite special.”
The results - which paid just over 66-1 in a seven-fold accumulator - left bookmakers counting the cost of the day.
Victor Chandler’s Charlie McCann said: “It would be fair to say that the language was slightly stronger than Whoops A Daisy when Mossley became the final winner in the trainer’s seven-timer.
“One of our customers had £100 accas with and without Whoops A Daisy.”
Betfred’s George Primarolo said: “On a sleepy Monday afternoon, Nicky Henderson’s magnificent seven have ridden into town and robbed us blind - we’ve been ambushed!”
The trainer’s achievements across three tracks took just over an hour and a half with Darlan and Mossley winning the 12.30 and 2.05 at Kempton.
Mossley was the shortest-priced runner at Kempton at 1-8 favourite following his second place in last season’s Albert Bartlett at Cheltenham.
Barry Geraghty, who was aboard all four, had to sit tight when Mossley misjudged the fifth-last fence in the Starlight Children’s Foundation Beginners’ Chase but the pair soon recovered to finish 10 lengths clear.
“I think Mossley slightly went to sleep, he made one mistake, but Barry said he winged the last two,” Henderson said.
There was a little added pressure in the British Stallion Studs Supporting British Racing EBF “National Hunt” Novices’ Hurdle as owner JP McManus was on hand to watch his 1-4 favourite Darlan.
Winner of his only start in a bumper at Haydock last April, Darlan was not foot-perfect over the obstacles but was far too speedy for Sleeping City.
The trainer’s record was able to stay flawless as his other runner Wise Move was withdrawn when lame at the start.
And even if Chablais (8-15 favourite) developed a habit of jumping to the left in the two-mile Halcyon Gallery Novices’ Chase, the lightly-raced gelding had pounds in hand himself.
“We’ve got to get these novices out, so it was just nice to see Darlan go and do it,” said Henderson.
“Chablais fell apart on us last season and he had to have time off.
“He’s not the most straight-forward and I would have preferred him to have been running over a bit further really.
“Barry said if it hadn’t been for the jumping to the left, he would have been perfect. Barry felt it might have been more because he was left in front on his own than anything else. You find these things out on the racecourse.”