Straight Clues

ACROSS

5 Principal 7 Exchange blows 8 Goodbye 10 Epochs 12 Preludes 14 Obtain a free lift 20 Habitual procedure 21 Scientific

organisation 22 Male offspring 23 Agility

DOWN

1 Wireless 2 Instil with ideals 3 Anything useful 4 Exclude 5 Condition 6 Prickly plant Combo Cross No. 4295 9 Oust 11 Baby biscuits 13 Interferes 15 Metallic element, symbol Fe 16 Stimulant 17 Aromatic plants used in cookery 18 Colder 19 Sea duck