So essentially, reading your narrative, you chanced your arm, knowing there was a "No Right Turn" restriction, and lost, correct ?
Their sole evidence of the alleged contravention is their video. Please download it and post it here.
To be honest, I can't see a road blockage on turning into Farmilo Road supporting an appeal against a 'no right turn' offence in Lea Bridge Road, but no harm in putting it in, but its very weak. If Farmilo Road was blocked at its junction with Markhouse Road, there would surely be a diversion, else how would residents on that road get in and out ? THe obvious diversion would be to turn right into Boundary Road, the next street after Farmilo Road and then next right into Boundary Avenue which brings you into Farmilo Road
So, to be frank, I see nothing that suggests a winning appeal at London Tribunals on your actual contravention (don't expect the council to concede, they won't).
So is there a technical appeal ? Well, all sorts of things can win appeals once a detailed investigation is done. Sometimes it turns up trumps and sometimes not. You'd be looking at, (inter alia): -
- an error in the PCN,
- error in the traffic order establishing the 'no right turn' restriction.
- camera authorisation issue.
- whether Waltham Forest are authorised to issue PCNs for this offence, if TfL are the authority for Lea Bridge Road.
I don't see any errors in the PCN, but others may come up with something in the other things I have noted. The important point to make is that with these sort of arguments, you usually end up at London Tribunals with the full PCN penalty in play.