As with the others in the series, the cache is not on the artwork. Start at N52° 02.770' W000° 44.797' This will take you to the former location of a fountain but now the site of the MK Rose.
According to the Parks Trust website (link) , “Developed in partnership by The Parks Trust and the Cenotaph Trust, with support from Milton Keynes Council, the Milton Keynes Rose was created as a central civic space to host events significance and occasions of remembrance.
Created by internationally renowned artist Gordon Young in 2014, the Milton Keynes Rose is an open-air circle with markings based on the mathematical beauty of a flower. Upon installation 106 granite pillars of varying height were mounted in positions to create the art piece. 68 pillars have been engraved with dedications, leaving 38 for future inscriptions. “
There are a number of events held at the Rose - check these out (link) so you can see what's happening.
You will need to look at the inscriptions on a number of pillars and note down some numbers.
Q1 – Find the pillar which mentions a date on which someone ate a fish! Note down the year – this will give you 1ABC
Q2 – Now find a pillar which refers to a Shooting Party. Note the year – 1DEB
Q3 – Something happened in this year in Osborne Street – 1DFE
Q4 – A New Bradwell resident who was born in June 1899, but when was he killed? 1F/0G/1D1G
Now some sums! You will need a calculator for this!
Y = ((B*F) + (C-E)) * (D+A) (a three digit number)
And
H = (G*E) + F
J = H * B
Z = (J + D) * C (This is also a 3 digit result)
The final location is at N 52 02.Y’ W 0 44.Z’
The final co-ordinates will get you to an area where tree cover makes GPS a bit unreliable. Check the hint if you are unsure. Please replace the container in the place you found it.
This is Parks Trust land and the cache has been placed in accordance with the Landowner Agreement on the GAGB website.
You can validate your puzzle solution with certitude.