20A Front of fascinating marine feature completely in absolute decline (4,4) ??E????? 15D Land containing bird is the least enjoyable thing (8) ?O???G??
11A A?????T?? Perennial rings brought forth tons in e.g. Kew feature (9) ARBORETUM or AUBRIETIA ? 2D ???T????T?? Correspondent accepts a thanks after page 'off the peg' (13)
8A jokey article is the absolute end (4) ?O?? 19D Wise fellow's single - married one's lacking a bit (7) S???M?N 24A River suited to Pooh's game thereon, we hear () S??? is the answer STYX?
13A Marsh about to be surrounded by river barrier (7) D???N?E 14D Bird in sack, caught with the others (9) ??R???E?T 20 Laws and treaties not offering power (4) ???S