Guardian 25,412

[gordonia]

Any help with these clues would be appreciated. Thank you.
1 across(B)- losing nothing when currency's accepted by woopie(5,4)??A?D/?L??
8 down- 100% cogency implying more at other churches had absorbed a crazy line for a nymph(4,5;9)
25across(A)-Health-giving prizes mostly in prompter's reactionary goal(9)E?T?O???C
16down(A)- Alloy for European prize bloke(5,4)??I?E/???D

[kayakamina]

1a grand slam
8d full force ....hamadryad
25 eutrophic
16 white gold

[vallaw]

16 white lead?

[Lie-in King]

1a (B) Grand slam (losing nothing) - 'rands' (currency, in) 'glam' (woopie)
8d (A) Full for-CE : (B) Hamadryad - 'a mad r(ailwa)y) (in) 'had'
25a (A) Eutrophic - 'trophi(es)' (in) 'cue' (back)
16d (A) White gold ('bloke' is for the next clue...)

[gordonia]

Many thanks K and L-I-K for the answers and explanations. I had thought of grand slam and eutrophic ,but wasn't sure enough to put them in. Should be able to finish it off now. hope you're having better weather than I am in Salford. :-))