The cache is not at the published coordinates - they are for the carpark in front of the Riddell Hall. There is an interesting blue plaque on a house nearby, which gives you one of the answers for Part 2, but on the cache page for Part 2 I give you an alternative way of finding the answer.
Then park at N 51° 16.545 W 000° 14.505
Each cache/geocheck has a clue for the next one.
Cache is at 51.1x.xxx 0.1x.xxx
22,22,206,23
224,206,21,2
Raised difficulty based on feedback, and added some clues as people seem to struggle with the start of this series.