Headbadge (or holes for one)? and I'm surprised there's no serial number on the BB shell, a Holdsworth of this vintage (has to be '70s with no braze-ons except the one cable stop) should have a number. The French 531 labels look to be re-pops...wonder if this is a repaint and therefore...is it a Holdsworth? Looks to be a good British bike, regardless of make.
Does it have one set of WB bosses? If so, they have to be added later.