Not so sure about these (specimens collected for det.), both found growing on a roadside wall made of limestone rocks, the first one in semi-shade near the base of the wall.
cf Racomitrium aquaticum (Narrow-leaved Fringe-moss): supposed to occur in moist river valleys, so may have this one wrong, though keyed out pretty well? [I now strongly susupect this is Anomodon viticulosus (Rambling Tail-moss), confirmed by Sam Bosanquet]
Id'd by Sam Bosanquet as Tortella nitida (Neat Crisp-moss) with springtails in attendance. Dentated, untoothed leaf margins with leaf tips frequently snapped off.