Just to set your expectations, Ealing will not accept your inital appeal. I appealed a PCN parked outside my house as I don't have a permit because I'm usually at work when the restrictions are in place. I took my girlfriend to A&E because she has a migraine for a week. I spent the night there, came home exhaused after calling in sick to work and went to bed. Woke up to a parking ticket. Told them all this and they still refused my appeal. They will refuse to use their discretion like the money grabbers they are.
Anyway, I'm up that neck of the woods today. I'll see if I can get some footage coming from costons ln, onto greenford rd and back into the School Street.