We have an existing shed to the side of our house, and are looking to add another. It will be behind the principal elevation, with access from the front of the property. Looking at the UK government building regulation site we are within building regulations to build it without planning permission.
However we spoke with the neighbours, who are claiming that it is forward of their principal elevation and so would need planning permission. I called the local council buildings regulation department to see if planning permission was required, and they would not provide an answer, and said we should apply for a Lawful development certificate.
I do not think planning permission is required, but does anyone have any similar experience?