Are you saying the British never sent troops into French territory? Any incursion by armed forces into another state’s territory is the very definition of invasion.

There’s been a lot of occupation as well. E.g. the hundred year war.

If we can say Russia invaded Ukraine, England invaded France

You’re trying to be a pedant, yet you appear foolish.

Ignoring history and being pedant on the Internet are not the same thing. But you’re doing a good job at both.