Our house is in a TPO polygon. There are two small trees in our garden to the left and right of our garden. The tree on the right side has…

Official description

Our house is in a TPO polygon. There are two small trees in our garden to the left and right of our garden. The tree on the right side has grown and damaged/ crushed the fence. The trees themselves are not individually TPO protected trees but within this polygon that covers the majority (not all) of the house and gardens and they are small. We would like to remove them. We would also like to please cut/ trim the neighbouring trees at 10 and 12 Austen Close to the boundary line as they're overgrown and coming into our garden, through the fences and threaten further damage. I understand if they were not in a TPO polygon this would be allowed without permission? We would like to remove the two small trees (labelled L for left and R for right) on the sketch within our garden please. I do not know the type of trees they are, I believe the TPO was issued in 1947. We would like to just do basic maintenance and remove the two small trees in our garden.