Did you need to pay for checked bags on this ticket? If not, why didn't you just check them?

Whatever you think about the effectiveness of a >100ml liquid ban, it's a basic rule that liquids need to be in a clear bag now. I can't remember if it's signed or not.

The last time I went through MAD, I forgot to remove 2 bottles of water from my bag. They were detected on screening. I speak basic Spanish, so I asked if I could drink them. The screener said yes, so I started drinking from one bottle and she then told me I could go. I kept the bottles and the water.

And the funniest part of this story is that later I discovered I had a carton of juice in my bag that I completely forgot about, which I had brought all the way through LHR security, carried around for a week in Spain, and then brought back to London!