They won't halt the process until the video is available, as they are under no legal obligation to do so. FWIW, I also tried to see your video and got nowhere, as they use the "Captcha" security question that doesn't seem to work for me. If I were you, raise an official complaint to Ealing.
The email address you used is clearly one for representations with its "parkingrep" name, so I would not expect it to include general enquiries.
OK, GSV doesn't show the signs as its latest view is 2024. Can you tell us if there are any advance signs for the Drayton Grove restriction on Drayton Road ? If you are able to return to the site and take some photos it would be useful.
And finally, be aware that councils ruthlessly game the system by rejecting virtually ALL representations and re-offer the discount, because they know that most people then fold and cough-up. London councils and TfL between them get over £650 million a year with this trick. So to win, you have to take them to London Tribunals with the full PCN penalty in play. So best if you have a robust case.
