jumbo 772 cryptic

[modeste]

Last few.
25 a Activity to get one taking trouble about meals, not half! (8) CATERING?
54a Hemp plant a secret group shortly brought back (5) A?A?A
57a Glue on map obscuring northern location (9) P???E?E?T PLACEMENT?
7d A part of hospital employing twists cotton in medical preparation (10) ASTRINGENT?
18d Casual sign showing that flat may be got rid of (10) ACCIDENTAL?

Thanx in advnace

[kayakamina]

54a Abaca.....A caba(l) <

[jno]

i can see pla (n) + cement there...

[Lie-in King]

25a Yes, - Caring (about) te(as)
54a Abaca - a caba(l) (back)
57a Yes, - cement (glue) on pla(n)
7d Yes, - A ENT (Ear, Nose & Throat) + string
18d Yes, - Musical notation

[jno]

a+ENT+string too, I guess

[gen2]

7d yes ASTRINGENT

7d A part of hospital = A ENT (ear- nose - throat)

employing suggests takes inside

twists cotton = STRING

medical preparation = ASTRINGENT

[kayakamina]

25a Catering looks right....Care + eating less e

57 Placement looks ok...Pla(n) cement

[kayakamina]

Too many heavyweights around; I'll slink off and watch the Olympics!

[modeste]

thanx 2 u all