'Say what you see' was a catchphrase coined by Roy Walker during the 14 years he hosted an animated picture based game-show, starting in the mid-80's. Immensely popular in the UK, the show which originated in the USA was a flop lasting only a year, and was cancelled just two days before the first episode in Britain was aired.
To find this cache look at the picture clues and 'Say what you see' It is approximately a kilometre from stated coordinates and the topographical features( G and I) are each ten feet long.
Struggling? If it would help to put the pictures in context, decrypt this.
Gb ybpngr guvf A, frg lbhe pbzchgre'f N gb O ivrj. Fgnegvat va Lryiregba ybbx nccebkvzngryl n xvybzrger njnl gb svaq gur ybpngvba pnyyrq PQR. Abj ybbx sbe gur gbcbtencuvpny srngherf bs n ST naq n UV. Tbg gurz, abj urnq W hagvy lbh ernpu n X. Sbyybj guvf X va n Y qverpgvba hagvy lbh trg gb n Z. (Purpx lbhe pb-beqf onfrq ba urer) Gb svaq gur A, frnepu haqrearngu gur B
Checker is for centre of M not N but either should work. Parking available: South for a cache and dash, or East if you want to go see G and I, they are only 250 metres away.