2428: Tracks to the isles
The unclued lights (one of two words), individually or as two pairs, are of a kind. Elsewhere, ignore one accent. Across 1 Groups of helpers providing accompaniments to pop-singers (8) 5 Trembling like fish (6) 14 Some weekend supplement (3) 16 Lionel wrecked ornamental metalwork (6) 17 Pack animal in a shopping plaza