I hope you enjoy this little walk from the cricket ground in Great Linford.
Question 1 - N52 04.247 W000 45.463 - On the notice board is a telephone number - this gives you 01908 ABA ACD
Question 2 - N52 04.293 W000 45.491 - The route number on this national cycle network sign gives you E
Question 3 N52 04.355 W000 45.525 - The century that Great Linford was known as Mechel Lyngford gives you FG and the years that Thomas Uthwatt was owner of the manor was 1719-17HJ
The cache can be found at N52 BG.DCB W000 JH.AE(F*3)
Good luck and please replace as found!