The closest where I park had the sign which states (No stopping at any time except 7 am - 4 pm, P for 30 minutes) that is the reason I parked, usually for loading bays also have it written LOADING BAY on road and that place didn't.

Hello, I will be grateful if you can please help me if there is something I can do with this notice please. On 23/12 I went to Kensington high street, whilst looking for parking space I saw a sign (attached) and empty space saying No stopping at any time except 7 am - 4 pm, P for 30 minutes. I safely parked my car which was left there for about 15 minutes. I then returned and made way home. I am now in receipt of this notice (attached). I went back there and saw two conflicting signs and wonder if I could successfully challenge it or it was just my sheer stupidity :/ Thank you for your help in advance.