Unfortunately, these "ahead only" arrows on traffic lights, plus the confirming green arrow, are mandatory on a motorist, and a sad fact of life nowadays. There is no need for any "no left turn" sign. One cannot turn right either here.
I'm not sure what to suggest as representations, but it does look as if you'd be looking for a "technical" appeal argument, such as the PCN containing errors.
BTW you need to post up the whole PCN for it to be checked for errors. You've only posted part of Page 1.
