If you’re planning to fly to London on a mainline carrier and then hub out to other parts of Europe via low fare carriers, DON’T!!
The “brilliant” minds in the UK have DOUBLED the tax that you have to pay for inbound and outbound flights, unless you’re transiting through on the same ticket. If your final destination is London or anywhere in the UK, you’re gonna get reamed. So forget the UK! Apparently Amsterdam (?) is the new low fare hub for Europe. Informative article about the new parasitic tax here.
Now what do I mean by “hub out”? To “hub out” means to fly a mainline airline to a city that’s a low fare airline hub. Using that city as a base, then continue flying elsewhere using low fare airlines. Example: I usually fly Singapore Airlines (best flights I’ve ever had!) to Singapore and then will fly JetStar or AirAsia to other destinations (usually KUL or BKK). It’s a good way to stretch your travel dollar and it’s fun too.