Hi Iain, thanks for that. The problem that I have is that I can't work to a specific date.
I just need to have a box here to fill over time as I'm not very well off myself so it will take a while. The reason I want to use this service is that it costs such a lot to mail stuff so it would be cheaper over time, as well as more beneficial to the recipient, to fill a box and send it.
Could I just get a large carton myself and then contact the company when I'm ready to ship it? It all sounded so simple but now I just get more and more confused...

xx