Wrong location is fatal to the PCN.
You should submit representations on the following lines: -
Dear Sirs
Re PCN <number> served on <date> at Crescent Road
Today I received the above PCN which alleges I committed a parking violation in Warehead Road. However, at the time on the PCN, I was parked on Crescent Road. As you will be aware, a PCN served by your parking officers is legally obliged to state the location of the contravention. As the location is incorrect, I request that the PCN be cancelled forthwith.
Yours faithfully