Abstract: There is disclosed an anchorage device (80) for releasably attaching a tethering system of a child safety seat to a vehicle anchorage point, comprising: a body (81) having an open hook portion (82) at one end configured to engage with a fitting provided on the vehicle anchorage point and a slotted portion (83) for facilitating connection with the tethering system; a retainer member (86) pivotally mounted to said body (81) and movable between a closed position wherein the retainer member (86) cooperates with the open hook portion (82) to securely engage with the fitting and an open position, wherein the retainer member (86) is positioned distal to said open hook portion (82) to facilitate disengagement of the anchorage device with the fitting; wherein the retainer member (86) comprises a closing member (86a) configured to co-operate with the open hook member (82) when in the closed position and a locating member (86b) integrally formed with said closing member (86a), the locating member (86b) is configured to