The tenancy agreement may well envisage the situation whereby the tenant wants to change the keys and set out the procedure for doing so. The terms of the tenancy agreement will take precedence as to how to deal with the situation, and as such should be checked thoroughly. The legal position is that locks, keys bolts and bars are as much part of the building as the doors and windows, and cannot therefore be removed by the tenant. In Bishop v Elliott [1855] 11 Ex. 113 (not available on Lexis®Library) Coleridge, J stated: 'With respect to locks and keys, bolts, and bars, there can be no question, whether properly called fixtures