Spot the Difference!

Well the AA repair lasted as long as it took to get here before the nut and bolt fell out fortunately without causing any damage. So I ordered a new pump from vw heritage and in the meantime we pottered around locally with a full tank of fuel so the old one didn't have to work too hard.  It arrived today and a local garage fitted it this afternoon as I didn't have the required tools to do it. So now restored to full health.
Hopefully the after and before pics show what was missing. (just to the right of the fan belt roughly in the middle)