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)