Amelia Oakley said: "Ted is king #allyouneedisloveday #loveday."
Mariam Kenny-Batch said: "Congrats @CaiusCollege Thought Magdalene had it in the bag. Loveday, you were on fire!"
David Rainford said: "Outstanding performance last night. Remarkable quizzing. Well done."
And Latymer Upper headteacher David Goodhew said: "Great win for Ted & the team!"
Speaking to the Standard today, Mr Loveday said he was "humbled and surprised" by the reaction to his performance.
He said: "It was just lucky that I got questions in the final that I knew about. I felt it was very much a team effort. I am happy we did it but winning was not really the point of it for us. We were in it to give it our best shot."
He partly attributed his success to memorising articles on Wikipedia about a wide selection of subjects.
He said: "University Challenge looks like it is very academic but a lot of the answers are out there on Wikipedia. But we did do a large amount of research too."