The present invention relates to beds having a support surface defined by a plurality of support members (104, 204, 240). According to some aspects the support members are sprung (104, 204) and the bed includes a damping system (106, 206), for example a damping arm (124), for damping vibrations of the springs (118, 218). According to some aspects the support members (204, 240) have laterally extending pusher members (236, 238) arranged to engage with adjacent support members (204, 240); the pusher members (236, 238) comprising damping material (254). According to some aspects the support members (104, 204) are received by a guide member (320, 420) made up of two parts (320a, 320b, 420a, 420b) arranged to retain a spring by engaging between the coils of the spring (418). The present invention also relates to bed frames comprising a plurality of movable side elements (568, 768, 1068) mounted for movement in a direction substantially normal to the body support surface. The side elements (568, 768, 1068) are resiliently urged towards an unloaded position. The present invention also relates to methods of manufacturing beds.