Sometimes still working on this pattern, but not found anything interesting before/after AGENCIES and SYMBOL until now. The Creator is not accepting partial solutions, so no constructive response acquired. I`ve tried to look for something interesting near BLETCHLEY PARK and … UNITED KINGDOM is found.
What is more I think that the next clue will be:
c0568c9ec4eb96e5d22551166be020d8ad692ae1