Side and front boundary fence in front garden

[Darts]

Can anyone help me with the following problem.
I have aside window as does my neighbour overlooking my front path which leads to the highway. My neighbour is about to erect a fence six feet In height from our side gates past and above these side windows and all the way to the highway blocking out not only light but any view to the front highway.
Can they do this at this height without planning permission.
All replies greatly appreciated.

 

[freddiemercurystwin]

http://www.planningportal.gov.uk/permission/commonprojects/fenceswallsgates/