The cache is not at the listed coordinates.
You will need to complete the ' Stroll around Port Sunlight' adventure lab cache gathering information as you go.
Once you have all the information, you need to put it into the formula below to find the correct coordinates:-
The cache can then be found at N53 21.??? W002 59.???
You are looking for a micro container here.
Below is a link to open the lab cache up :-
Please replace cache securely after signing the log.
To access the labcaches, scan this QR code (or click on it) from your smart-phone,
Or click on this link : https://labs.geocaching.com/goto/PortSunlight