This cache is in Marina Gardens, a small park in Littlehampton, near the seaside.
You're looking for a small, approximately, 10cm cuboid shape container in the corner of Marina Gardens park, on the corner of Irvine and Beach road, leading up towards the sea. In summer there are many muggles so you may have to use stealth.
Jurer lbh jbhyq svaq n jbbqcrpxre ba n gerr. Ybbx sbe gur synfu bs erq!