From the GZ you have a wonderful view of the river, including the floats blocking off the weir and a good view of one of the most recent developments along this side of the river.
The block ahead of you is Harry Davis Court, which is where I owned my first home. It is named for Harry Davis who worked at the nearby Royal Worcester Porcelain.
Learn more about Harry Davis here: http://www.museumofroyalworcester.org/learning/research/workers-and-factory-owners/harry-davis/
This is a small cache which is well wedged. You will not be able to have the cache in your hands but you will be able to extract the log (you may need tweezers).
Well done to Dobunnis for being FTF