I live in France and use first row sports, a quick google should find it. There’s usually 10 or so links per game and I’ve found UK terrestrial coverage has been one of the first three links for every game I’ve watched that way this world cup.
I’m a bit surprised that you say that http://www.filmon.com has been blocked. Works fine here in the Netherlands.
Another way that works for me is using the Hola unblocker free add on for Firefox. This allows you to access UK websites. Works for me for BBCiplayer and UK (or even US) Netflix, amongst others.