I am going that way, can't think of much else.Hirundine?
Yes - clearly another Ringed Plover bending it's head backwardsRinged Plover
Legs look bluish , so ok for house Martin.
Yes - clearly another Ringed Plover bending it's head backwards
Where you say "a few" does that mean there is anything else, regardless of how clear, it could help resolve the two headed aspect.unfortunately not - just took a few long range to hope for id . Scope needed not bins !