31618 Bluebell Rlwy Sheffield Park

The only one readily recognizable in this picture is 1618 a U Class 2-6-0 of 1928 (BR 31618), but the one at the back should be Wainwright Goods No. 592 (BR31592). The engine on the left can only be the Adams Radial 4-4-2 No. 488 (BR30583)...