The cache is not at the published coordinates. There is no need to visit the posted coordinates they are inside a restricted fenced off area.
This is the bonus cache for the Brooklands Heritage Park geocaching adventure.
You can find further details about the smartphone app for Adventure Labs here: https://labs.geocaching.com. If you already have the app then search on nearby Adventures to find Brooklands Heritage Park.
Opening in 1937, the Campbell Circuit proved popular with the increasing number of drivers who wanted to experience the thrills of motor sport. The new circuit, designed by and named after Sir Malcolm Campbell, zig-zagged its way across the centre of the motorcourse cleverly incorporating the old banked track. This was intended to be a more traditional road course, though it did feature a considerable portion of the Members Banking, which gave the advantage of making most of the course visible from Members Hill. The pits and starting area were on a new straight, parallel with the existing Finishing Straight, and the circuit cut through the Members Hill to join the banked track. It utilised the Members Banking and part of the Railway Straight, before turning Ieft to wind across the Brooklands infield, eventually crossing the river again before turning left and across the Finishing Straight and rejoin the new pit area. The Campbell Road Circuit was in regular use until August 1939 for long-distance races as well as short handicap events, and proved very popular with drivers. Parts of the circuit still remain within the Brooklands Museum Heritage Site.
As you go around the locations in the adventure you will collect information towards the final coordinates.
The cache can be found very near a part of the Campbell Circuit at:
N51 2A.BCB W000 2(B-D).ADB
Congratulations to lisboa_bruno on the FTF at 06:02 on 02 May 2022