Lichens on beach pebbles

There are at least four species of lichens on these beach pebbles.  I think that the bright yellow one is Xanthoria parietina and the one with large flat grey lobes is Physcia adscendens.  The thin-lobed one on the right has long hair-like structures and is probably Parmelia sulcata.  There is also a white crusty one and a black crusty one, both of which are beyond my identification skills.  These were on Pagham beach, in an area that was once the mouth of Pagham harbour, but is now a long way from the shore and the harbour mouth which has now migrated far to the east.  They have therefore had a long time to get established in this tough habitat.