Danson Park is a public park located between Welling and Bexleyheath. At 75 hectares, it is the second largest public park in the borough (the largest being Foots Cray Meadows at 100 hectares), and the most used by the community. Opened in 1925, it is often considered the finest green open space in the borough.
It provides a large number of facilities. Further details can be found at GC8P3HN
When this puzzle was first set it was intended to give people something to do while they were being encouraged to be at home and for those local enough something to find on their daily bit of exercise. Then full lockdown happened and caches stopped being published. With the first steps on the no doubt long road to normality having now been taken it's time to dust it off and finally get it published.
Although you'd probably find it pretty easy to social distance at the given co-ords, don't go to them. Instead use the number, AB, that everyone's currently talking about to solve the below:
N51 27. A B B-A
E0 7. A+A B-5 B-A-A