Depending upon the scope of works your project may require building regulation approval.
We will advise you accordingly, however, as a general rule of thumb if the means of escape, in the case of fire, are being effected in any way then yes.
Also if the purpose group of the building is changing and if any changes are taking place to the structure then again building regulation approval must be sought.
Similarly, if your refurbishment makes any changes to the number of toilet facilities, insulation, protected fire escape route or compartmentation of the building then approval must be sought.
Cubex Contracts, once appointed, will administer the building regulation application on your behalf.