I'll keep it brief;

Three messed up.

A network fault developed where I work on April 11th. All signal stood at full 3G for a few minutes then died to nothing within seconds. Normally, this area is well covered in 3G Three signal. I reported the issue the same day. More than two weeks, several support emails & tweets later the mast still wasn't fixed.

I switched to giffgaff to test out the signal strength of a newly installed O2 mast. I'm happy to say that i'm FLOODED in 3G signal where previously, not even 2G existed.

Good to see O2 plugging holes where they exist with fast 3G coverage. Shame Three, who are my preferred network couldn't manage to fix one of their own masts.

Shame!