Question about "your travels" form

[alexval]

Hi everyone !

I'm from europe and I have to fill the application of travels of CIC which must contain all the travels I did.

I went to toronto some years ago and my plane flew from paris to London, then i had to take a bus from London Gatwick to London Heathrow and then I went on another plane which flown to toronto.

Is London considered as a trip or is it just passing through?

Thanks for your help §

Byeee