I have a empty helium canister if it is any good to anyone, i am not sure if you can re-use it for anything.

U been blowin up balloons?

Yeah just got married bud.

In the past I have cut these in half to use as small BBQ's

I am surprised they are not sent back to be refilled.

All these thin metal containers are non-reuseable.

How could i dispose of it, do you know?

Take it to the tip near Brakenwood golf course

Haven't got access to a vehicle to take it mate.
This is when people start leaving things on th streets when people cannot dispose of things easily.

Try offering it on freecycle some one might be looking for one.

Surely if you remove the pillar valve to show that it is not under pressure, it can go in the recycle bin?