This series has many different types of cache though the only tool you will really need (at some) are tweezers! Numbers 1-10 are set alongside the busy A32 so some stealth will be required but numbers 11-17 are set alongside the very picturesque Salterns lake which can get *very* muddy in winter so wellies are recommended :)
Where you are required to cross the main road (after #1, after #3 and after #17) caches have been placed near pedestrian crossings/underpass as the A32 can be a fast busy road. There is a playpark between 15 and 16 for any accompanying geokids* and some large green spaces from 14 to 16 for geodogs!
*After #11 the path can be muddy and would be difficult for a pushchair/wheelchair in winter or wet months
Some of the caches have a code in, make a note of the numbers, you will need them to work out the position of the bonus caches :)
Most of all ~ ENJOY
#20 Bonus B ~ Hopefully you have found caches 1-18 and bonus A and you have found 8 numbers that correspond to letters A to H
Use the following equation to find the co-ordinates
N50 (F x F) + E .(G + B) (A x H)
W01 (D + G + H) . ((D x D) x A) F
You will need tweezers for this cache.