Aslan v Murphy and Duke v Wynn [1989] EWCA Civ 2 is an English land law case deciding whether an occupier was a tenant or, instead, a lodger.

The case confirmed the anti-avoidance principles which apply to interpreting whether a habitation arrangement is a lease or a licence (to occupy).

A 22+1⁄2 hours-per-day "licence" was held to be a lease; with exclusive possession of room, with a lock.

The judgment expressed an intention-based test where the live-in landlord acts as the keyholder, giving examples as to where exclusive possession is not being denied as part of the living arrangements by the landlord retaining the keys.

Lord Donaldson MR held that this provision was a pretence and not part of the “true bargain”.