Cryptic crossword

ACROSS

1. Agree to cheat the worthless dog (6) 8. Having begun it, yet reveals it as a single whole (5) 9. Vain, changing hat that doesn’t hold good (7) 11. Lew and Wendy are disposed to be seen fresh from the altar (5,3) 12. Classic bowler in America (5) 15. Monsieur will invite one to conceal one’s feelings (4) 16. The self one may go on a trip with (3) 17. Impetuosity shown by the French in changing lane (4) 19. Was an author taken from the Tower? (5) 21. He has a remote chance, but society won’t accept him (8) 24. Relaxation of relations made ten terrorists reveal it (7) 25. Pieces of such a crew were highly prized (5) 26. Lover changes at end of May to excess (6)

DOWN

2. Snow leopard is one of sixteen in the pound (5) 3. American picnic meal: back-formation (8) 4. Undo one utterly by putting one in the race (4) 5. Big and sturdy as the Virgin Queen’s statesman sounded (5) 6. Be in rivalry with woodentop to get a look at it (4) 7. Looked at what I’d sounded like (4) 10. Very pleased to provide one with a match indeed (9) 12. Hold back the flow quietly if it’s moist already (4) 13. Stay of execution for Pierre perhaps: woman loses head (8) 14. Poker player bets it can be made with a ten (4) 18. Devoutness, type of which might consume one (5) 20. Small child, a novice at the wheel − that’s all there is (5) 21. Animals of which ten may be found in one variety (4) 22. Got up with a garment for a Roman (4) 23. Work it again if danger signal comes to nothing (4)