CRYPTIC CROSSWORD

Across 1. Hot central heating contains eight new advanced systems (4, 4) 5. PM on border causes chaos (6) 9. Professional with child drinks litres very likely (8) 10. Celebrity chef ignoring 50 per cent carbohydrate (6) 12. Book used in Requiem Mass (4) 13. Union lead, calling for education (10) 15. Start piece involving quiet navel-gazing (13) 19. We grab Irish newspaper first as message carrier (9, 4) 23. Former primary school child’s play (10) 25. Sea birds go west to find a bigger one (4) 28. Tartan dressmaker working badly when out of this? (6) 29. Help to open translation of ‘Dr No’ book (8) 30. Make over English hotel during flood (6) 31. Extremely silly singer not performing for hedonist (8) Down 1. Part of typography phenomenon that’s seen in clue 15 (6) 2. North African government picked up stable worker (5) 3. Duck leaves lake (4) 4. Caribbean leader plays funny old tune, one of his own? (7) 6. Continue performing on stage in part of Ealing (5) 7. Birch die off at back of copse after this is spread? (9) 8. Several catch a boar in wood (8) 11. Get hold of good epitaph (4) 14. Small label says: ‘The Monarch of the Glen’ (4) 15. I’ll stop hospital admitting European in poor condition (3, 6) 16. Some in pub initially don’t drink very much (3) 17. Manager hasn’t got a copy (4) 18. Exhibitionist skater dances in front of Queen (8) 20. Not the highest part of range up in Scotland (4) 21. Student leaves only after damage agreement (7) 22. Ball of glass and metamorphic rock (6) 24. At back of flat, sempstress finally makes uniform (5) 26. Key all normal Japanese in primarily using this system (5) 27. Size of stadium with no name (4)