I dragged my colleagues to Taqueria off Westbourne Grove earlier this week. They are the same people who do the Cool Chile Co. products. I had the carne asada tacos which were very very good, and the guacamole was absolutely perfect. They did use corn tortillas for the quesadillas, which I found a little bit strange. The portions are pretty small, almost like tapas, so I would recommend ordering a few different items.
Unfortunately, I didn't get to try any of the side items that I ordered, as the ceiling caved in whilst we were eating!! Seems like there was a big leak upstairs. Plus side, we didn't have to pay for any of our food, as we were rushed outside before anyone got hurt.