Surprise In My Lunch Break!

Can anyone ID this for me please? Approx 3mm long - dropped onto my tray when eating lunch! It was on oak leaves and a very pretty turquoise metallic green. Taken with my iphone and cropped massively, hence poor quality!

Nick Moran on Twitter has kindly ID'd this very quickly for me – "Looks like a Phyllobius weevil. Doubt it's possible to ID to species from that image" The image I put on Twitter was uncropped and alot smaller though! Thank you Nick and also to Keith Kerr!