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A body support platform for supporting a human body, comprising one or more body support unit(s), the or each support unit comprising a plurality of columns, each column comprising a stack of fluid-fillable substantially spherical resilient balls, each ball of a respective column being physically an

A body support platform for supporting a human body, comprising one or more body support unit(s), the or each support unit comprising a plurality of columns, each column comprising a stack of fluid-fillable substantially spherical resilient balls, each ball of a respective column being physically and fluidly connected only to the adjacent ball(s) within said column, such that a column may be compressed substantially independently of a neighboring column; and a base providing a primary fluid reservoir; wherein said columns are arranged in an array across said base; and each of aid columns is connected to said base, such that the lowermost ball of each respective column is directly fluidly connected to said primary fluid reservoir; and wherein the uppermost ball of respective columns collectively define a body support surface.

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1. A body support platform for supporting a human body, comprising one or more body support unit(s), the or each support unit comprising: a plurality of columns, each column comprising a stack of fluid-fillable substantially spherical resilient balls, each ball of a respective column being physicall

1. A body support platform for supporting a human body, comprising one or more body support unit(s), the or each support unit comprising: a plurality of columns, each column comprising a stack of fluid-fillable substantially spherical resilient balls, each ball of a respective column being physically and fluidly connected only to the adjacent ball(s) within said column, such that a column may be compressed substantially independently of a neighbouring column; and a base providing a primary fluid reservoir;wherein said columns are arranged in an array across said base; and each of said columns is connected to said base, such that the lowermost ball of each respective column is directly fluidly connected to said primary fluid reservoir; andwherein the uppermost ball of respective columns collectively define a body support surface. 2. The body support platform of claim 1 wherein at least one ball in a column has a different resiliency to at least one other ball in said column. 3. The body support platform of claim 1, further comprising at least one band provided around at least one unit, to affect the resiliency of said unit(s). 4. The body support platform of claim 3, wherein the height of the band is less than the height of a ball and wherein the band is provided around the outermost columns of the unit, such that the band lies substantially horizontally and co-planer with the body support surface. 5. The body support platform of claim 4, wherein the band lies substantially in a plane including the physical connections between respective adjacent balls of each outermost column. 6. The body support platform of claim 4, comprising a plurality of bands being provided around the unit, spaced apart from one another, wherein the resiliency of each band around said unit is different to that of at least one of the other band(s) around said unit. 7. The body support platform of claim 1, wherein the balls in a column are fluidly connected by means of openings, valves or a fluid conduit which traverses the height of said column. 8. The body support platform of claim 1, wherein at least one column is removably connected to the base. 9. The body support platform of claim 1, wherein the array comprises N×M columns arranged in a regular grid pattern. 10. The body support platform of claim 1, wherein the base is hollow and has a plurality of ports, each port for receiving the lowermost ball of a column in a unit and including an opening allowing each of said lowermost balls to be directly fluidly connected to the primary fluid reservoir. 11. The body support platform of claim 1, the base further comprising a reservoir charging port through which the primary fluid reservoir may be charged with fluid, the charging part having a one-way valve to substantially prevent the flow of fluid out of the primary fluid-reservoir. 12. The body support platform of claim 1, wherein each primary fluid reservoir has an independent fluid source. 13. The body support platform of claim 1 further comprising one or more modules, each module comprising a plurality of units. 14. The body support platform of claim 1, further comprising one or more trays, wherein the or each tray receives a respective module. 15. The body support platform of claim 14, wherein each tray further provides a fluid supply in fluid communication with the primary fluid reservoirs of each unit. 16. The body support platform of claim 14, wherein each base further comprises at least one vent to enable the distribution of ambient air between the columns of the units. 17. The body support platform of claim 16, further comprising a fan connected to the at least one vent. 18. A kit of parts for fabrication of a body support platform for providing support for a human body, the kit of parts comprising: a plurality of units, each unit comprising a plurality of columns, each column comprising a stack of fluid-fillable, substantially spherical resilient balls, each ball of a respective column being physically and fluidly connected only to the adjacent ball(s) within said column, such that a column may be compressed substantially independently of a neighbouring column; anda base providing a primary fluid reservoir;wherein said columns are arrangable in an array across said base; and wherein each of said columns is connectable to said base, such that the lowermost ball of each respective column is directly fluidly connected to said primary fluid reservoir. 19. A bed, comprising: a bed frame,a body support platform comprising one or more body support unit(s) according to claim 1, andat least one tray removably attached to the bed frame, each tray receiving a plurality of units. 20. The body support platform of claim 1, further comprising a plurality of actuators, each actuator being arranged to reciprocally move a respective column perpendicularly to the body support surface and being located at the end of said column that is distal from the body support surface, and further comprising a ventilation system for providing ventilation through said support surface and a control system for controlling said actuators, and said ventilation system including a user interface to allow a user to select ventilation conditions and support surface tactile conditions and for controlling said actuators and said ventilation system depending upon the user's selections.