Simple answer re the bomb suspension lugs - there was a set on top and on the bottom. One set was for attaching to the British release system on the bomb carrier, and the other for attaching to American aircraft systems. These wee single and double suspension lug rings, with different spacing to fit the respective carriers.
The 'lanyard' on the nose fuse of the bomb is actually a narrow 'flag', similar to today's 'RBF' tags, and is attached to the safety pin, which passes through the collar of what appears to be a contact fuse, or timed nose fuse, behind the actual striker cap, preventing the cap from moving to the rear, thereby initiating the fuse. The flag was probably red or orange, and is obviously there to indicate the safety pin is still in place, visible in the picture against the fuse nose cap.
The pin(s) would not be removed until the aircraft was ready to taxi, at which time the bomb(s) were then armed.
A tail-fused bomb had an impeller, fitted between the bomb fins, in the tail of the bomb casing, with the pin attached by a Bowden cable to a strong-point on the pylon or wing underside. When the bomb was released, the cable taughtened, pulling the pin free, allowing the impeller to rotate in the air flow as the bomb descended, thus arming the fuse. The latter could be instantaneous, or delayed, with an average delay being 11 seconds, allowing the dropping aircraft, and the one behind, to clear the target before the bomb(s) detonated, thereby preventing destruction or damage to the aircraft.
A longer delay fuse could be set, anything from 30 seconds to hours or days, although this type of fuse pistol was not normally used on fighter-bomber ordnance, being more common on heavy bomber weapons.