Wightman used to be already the quickest guy this yr and went for the win with 200m to move.
Ingebrigtsen used to be not able to react and the Nottingham-born athlete held directly to take the largest win of his profession.
Dad and trainer Geoff is the stadium announcer at Hayward Box and commentated in his son successful gold.
He mentioned: “Working is coming house. Wow. This is my son, I trainer him and he's the sector champion.”
Wightman has prior to now gained Ecu and Commonwealth bronze and simplest got here tenth ultimately yr’s Olympics in Tokyo.
Following his victory, Wightman mentioned he used to be nonetheless looking to wrap his head across the fulfillment.
“It most certainly gained’t sink in till I've retired I don’t suppose,” he mentioned.
“It’s mad. I had this type of disappointing yr in Tokyo remaining yr. I don’t suppose other folks realise how crushing it used to be to move in with such prime expectancies and are available away hoping for a medal however finally end up 10th.
“I simply knew coming right here I needed to take the drive off and the one factor that might occur used to be that it used to be a greater run than remaining yr.
“I were given a whiff of it at the remaining lap. I knew if I used to be there with 200m to move I may just put myself able to win it and I used to be working for my lifestyles on that house instantly.
“I've given up such a lot to get so far and it makes the whole lot price it.”
Teammate Josh Kerr attempted to set the tone forward of the overall by way of successful his semi-final, admitting he didn't wish to nevertheless it used to be “a laugh”.
However the 24-year-old used to be not able to threaten the medal positions and overlooked out on having the ability to upload to remaining yr’s Olympic bronze to complete 5th.