For sale Aqua roll, with bag, hardly used. + 12 volt internal water pump

Hello, Im a new motorhomer and after a fresh water barrel with pump. My apologies if this is a daft question but can you say if the pump would fit my van, I have a Swift Bessacarr which has a small round fitting with two pins, positioned adjacent to the water inlet, would the pump fit this?

Also, I am in south London so would need to send a courier for this, would that be OK?

With thanks

John