No I tied it shut so no foxes would hopefully touch it and to try and preserve it from the bad weather.
I phoned the council today and told them where I left it. They thanked me and said it would be picked up.
They said they would scan it. I'm sure they will be able to identify whats in the bag by feeling round it. I left it in a specific place and I'm sure no one will leave another black bag there.
I go past where I left it on the way to work so I will check tomorrow morning.