Auntie Pat, I think 16 buses is more than is currently run on the route. Maybe this means that, as well as increased capacity on the actual bus, they will run more frequently. I think they have a maximum of eight buses on the route at the current time.
You could be right, I waited ages for a 78 this evening from Liverpool St to Grange Road. It was a struggle to get off it, I had to get off at the front door, squeezing past a number of idiots who wouldn't move!
Oh thank GOD. This is brilliant news, thanks for posting. Why the 78 hasn't changed to a doubledecker service before now beats me, just the worst bus to have to use (and, natch, the only one that goes by my work).