Technically there are no Building Regulations requirements for decking unless the decking is required to enable access from the house into the garden.
Anyway, if you're a by the book kinda feller then the balusters should be vertical to prevent kids climbing them, the balusters should be close enough together so as to prevent a 100∅ sphere cannot pass through. The height should be 900-1100.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local