The All England Lawn Tennis Club (AELTC) issues Centre Court and No.1 Court Wimbledon Debentures to raise funds for capital expenditure. For example, the construction work on the Centre & No.1 Court roofs was financed this way, ensuring uninterrupted play throughout the Championships. The Debenture seats are situated in the best locations on both courts and offer the finest views. There are no restrictions in buying and selling Wimbledon Debenture tickets, unlike Wimbledon public ballot tickets which are non-transferable. A series of Centre Court ‘Debentures’ are issued every five years by the AELTC. In return for a nominal loan and a premium, holders of Wimbledon debentures are entitled to an excellent seat on Centre or No.1 Court (in the lower rows of the Middle Tier), for each day of the Championships, for five years (the duration of the series).