The dog leg might make it a side extension.
PD has limit of 3m above ground level to eves.
Located in Birmingham.
Page 6, E
Again, that's not my council but it also in midlands and not too far from me.
View attachment 192140
View attachment 192141
Sorry, just having another look, the front is to the south.
Under a formal Planning application, that would be classed as a rear extension. Under PD, that would be classed as both a side and rear extension with both rules being applied.
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.
Are you a trade or supplier? You can create your listing free at DIYnot Local