For diversity of Occupation think Wright v MacAdams, in that case the tenant askede the landlord to store things in a coal shed, the landload said yes. Subsequently when the tenant reupped his lease the coal shed use was included, because it wasn't expressly excluded in the new lease. Therefore a proprietary interest coupled with an interest which could previously be looked at as a licence, when viewed together unless expressly frbidden can serve to start an implied easement under s. 62 LPA 1925.
For this to occur 2 criteria :
prior diversity which we now have as tenant had the right
conveyance (which we have obtained through the leasehold renewal