We have a woodland management scheme in place for an area under a bulk TPO. We had the scheme approved via a planning permission process in 2013 and have been steadily working our way through the various works (we literally have hundreds of trees, many of which have been neglected in the past and have lots of dead wood/need felling for safety reasons).
I am wondering whether we ought to have had the permission refreshed or something? We started the work when the planning permission came though but have then been working through it tackling a few trees a year (it costs thousands to deal with the work).
Does anyone know if the rule that once you have the permission it is there for good (as long as you start the work within 3 years) applies to tree work too?