It's been growing quite well but has patches that are quite yellow and one or two areas that are looking brown and seem to be dying ,what is the best thing to do please?
Certified GKH Gardening Expert
These areas could be infested with pests, such as moles or other underground rodents. You can take samples of soil to your local extension to find out if you have any deficiencies, or if your pH is out of balance in your soil.
Here are a couple of links that will help: https://www.gardeningknowhow.com/extension-search/