Ordinarily you do not require Planning Permission for the installation of a Biomass Boiler. However you should always check.
If your dwelling is in a Conservation Area, or is a Listed Building, or in an Area of Outstanding Natural Beauty (AONB), or on a World Heritage Site, there is additional criteria to meet. You should firstly consult with your local planning office to confirm any requirements.
All new heating systems need to comply with Building Regulations:
Under the Cleaner Air Act wood can only be burnt in exempted appliances, again one should confirm with your local area planning office.