Responses can submitted via the Council Planning Portal
Visit the above planning portal link and Click on the "Consultation" tab as shown below:
At the bottom of the consultation page, under the title "Public Representations", use the "click here" link.
On the next page next to "If you do not have a reference number" use the "click here" link.
You should then see the "Application Comment Form" where you can enter your address and your comments.
Note: it is better to prepare your comments before hand and then copy and paste them into the comments box due to its small size.
Comments can also be emailed to the case officer who's email address is listed on the main planning portal link above.