I was wondering when the deadline for written submissions to the hearing of the above is meant to be in by and what is the correct e mail address for submission. I know it is the 19th July but not sure of the deadline time.

If you are sending in your submission by email then any time on the 19 July is fine.
If you're sending it in hard copy, please post it sufficiently in advance for us to definitely receive it by the 19 July.