This depends on the amount of insulation already present in your property. However, adding insulation has been proven to improve the energy efficiency of your home and decrease your heating bills, this is more obvious in older properties or where single glazing is still in situ.
Dulverton
Dulverton is a small town as well as civil parish in the heart of West Somerset, England, near the boundary with Devon. The community has a population of 1,408. The parish consists of the communities of Battleton as well as Ashwick which is located about 3.5 miles (5.6 kilometres) north west of Dulverton. To the west of the district lies Ashwick House, integrated in the Edwardian style in 1901. Also close-by is the estate of Northmoor, formerly a seat of Sir Frederick Wills,1 st Baronet of Northmoor, one of the 4 Wills Baronetcys, as well as the founders of the Imperial Tobacco Company. In 1929 Sir Frederick's boy & beneficiary, Sir Gilbert Wills, second Baronet, was raised to the peerage as Baron Dulverton, whose major seat was at Batsford Park, near Batsford, Gloucestershire. Dulverton is a popular visitor destination for exploring Exmoor, and also is residence to the Exmoor National Park Authority headquarters. The town rests on the course of the Exe Valley Way and also Land's End Trail.