You are not permitted to sublet only a part of your property (i.e. letting out rooms / taking in lodgers etc.).
You are not permitted to sublet the whole of your property unless this is via an Assured Shorthold Tenancy and the tenancy agreement does not exceed the period of twelve months. Any tenancy agreement entered into in this regard is required to contain a covenant on the part of the sub-tenant to abide by the terms of the Lease (save for the payment of the Service Charge).
For the avoidance of doubt, short-term subletting of your property on websites such as Airbnb are therefore strictly prohibited and if your property is sublet in this manner, this could result in enforcement action being taken against you.
You are required to give notice of the subletting of your property within 28 days upon the creation of the tenancy agreement together with a registration fee of £35.00 plus VAT. You should therefore send a copy of your tenancy agreement to Althorpe Grove Freehold Limited C/O London Block Management together with a cheque for the registration fee made payable to ‘London Block Management’ in the first instance.