An anchor (1) is provided for securing at least one safety device to a structure (40, 70, 97), the anchor (1) including: a) a shaft (12) terminating in engagement means (11), such as an eyelet, the shaft (12) located in the structure (40, 70, 97) and adapted to reciprocate between a retracted position in the structure (40, 70, 97) and an extended position whereby the engagement means (11) is capable of extending beyond the external surface of the structure (40, 70, 97); b) stop means (31) adapted to limit the extent to which the engagement means (11) may be extended beyond the surface of the structure (40, 70, 97); and c) resiliently deformable means (14) such as a compressible rubber sleeve, adapted to coact with the shaft (12) and the stop means (31) to resist axial extension of the shaft (12) up to the extent determined by the stop means (31).