Related Clues:

• That's over in England, too
• Too gritty to be under the South
• Sounds as if their four will make 'er leave
• In addition it sounds like, too (3)
• Therefore see 9 across and 6 down for the end of it
• You'll find this over in England, too
• Therefore make 'er leave
• 'It follows logically...'
• Far-away connector
• There four, by the sound of it, might make 'er leave
• This is over in England, too
• One of the 26 down in England gets this over, too
• That's enough, therefore, to make 'er leave
• 'Over in England, too (3)'
• Some Boolean-logic operators