Related Clues:

• Unconscious, having no lithium that's clear
• Evident across mouth of Thames
• Clear some spare time
• Clear -- and unaware havng left one out
• Extra time open to view
• Apparent, evident
• Open's finished -- amateur's fourth
• Patent finished before end of night
• Clear, blatant
• Completed on time? That’s clear
• Open secret, Conservative to quit
• Surplus time in public
• Plain retired vicar dipping into Holy Writ
• Blatantly obvious