The controlled parking zone sign is for, well, parking; it has nothing to do with moving traffic restrictions. Here's a draft representation.
Dear London Borough of Tower Hamlets
I would like to make representations against PCNs TT55449277 and TT55449109 on the following grounds.
Firstly in respect of PCN TT55449109, I would suggest that in the absence of any advance warning signs, there is inadequate notice of the restriction given to motorists turning left into Coborn Street from Coborn Road.
Secondly, both PCNs were incurred within a few minutes of each other, so looking at the totality of the circumstances I invite you to consider whether it is proportionate to enforce both penalties.
I would thus ask whether you would be willing to cancel PCN TT55449109 and allow PCN TT55449277 to be paid at the 50% discounted rate.
Yours faithfully,
Before you ask, the PCN numbers have been very deliberately cited as they have been.