This is an eight pound bomb used by the British for anti-personnel purposes. There were two different variants, although the Mark I was never in service. This bomb carried various explosives such as TNT, RDX/TNT 60/40, Pentolite D1, Amatol 50/50 and Amatol 60/40, although TNT was still added for those that used other explosives. About a pound of explosives were housed in this weapon. Apart from that, this bomb has a casing in the rear for a parachute.
Plugin used was Armory 3D to generate the images you see. The information in the description can be found in British Explosive Ordnance, published by Navy Department Bureau of Ordnance on June 10, 1946.