A common fact in any transaction, is the effect of human relations, daily life and commercial realities. The legal do's and don'ts are often overtaken by practicalities. An example is a need for a tenant to enter into occupation of premises.

The recent case of Mann Aviation Group (Engineering) Ltd (in Administration) v Longmint Aviation Limited Ltd dealt with the rights of an occupier going into possession of premises and paying rent, but without any form of written lease or licence.