I was just congratulating myself on how well I was doing this week when I came to a full stop! Help much appreciated
25ac Given slice of partridge pie, centenarians beam. ( 5,5)
_I_G_?_ _E_E
38 dn Royal supporter atop curved structure in thin fog (10)
_O_A_ _ _ T_ T
18 dn Enclose new pens in this place (8)
_N_ _ _ E_E
37 dn Go with a rich pro, inaccurately describing mountains (10)