This is a bonus cache to accompany our Adventure Lab series: Newmarket's Bits & Bobs.
The anchor marker for the Ad Lab is located in the centre of the roundabout near to the above co-ordinates.
The cache is NOT at the given co-ordinates. The final co-ordinates can be found by inserting values for J, K, L, M & N into the following equation.
N52 14.(N+J)K6 E000 23.(J+M)(L+N)4
The values for J, K, L, M & N are given in the Ad Lab journal pages which open after answering each of the Ad Lab stages. Once they have opened, the journal pages can be re-opened at any time within the Ad Lab app.
NOTE: The Newmarket's Bits & Bobs Ad Lab overlaps in part with the Newmarket's Great & Famous Ad Lab, and the two Geocache bonuses are located in the same general area as each other.