How many letters in the Answer?

The Telegraph - Toughie Oct 31 2018

An Olympic medallist going round in small boat canoe
Brand of wine to get sister down? The reverse bluenun
Broadcasting to millions consuming little electricity telecom
Brushing up on foreign language, improving appearance in table? frenchpolishing
Criticise expert over a wonder cure panacea
Dark Blues set off in racing boat outrigger
Does perhaps cut across vehicle going over repeated route retraced
Fattening food's given relative inflammation carbuncle
First US pilot is somehow crossing over in this spiritofstlouis
France needs taller rugby player flanker
Hippopotamus clearly shows strength muscle
Lethal weapon finally changes hands mortal
Loose woman cycling I love, being ladies' man lothario
Lots let off at first when one's accepted clemency lenity
Lots of pipes providing note backing crooner tubing
Model can then charm enchant
One or two perhaps count in conclave cardinalnumbers
One's detained someone snooping around boy prisoner
Performance dropping tango for string instrument accordion
Playwright with digestive condition needing nurse ibsen
Showy insect flying round university -- one makes a lot of noise loudmouth
Sounds like what you need to drive off in military style khaki
Spies dog out of control -- was rabbiting gossiped
Takes risks besieging old eastern bishop's territory diocese
Things I worked out? insight
Tongue and groove primarily used in flooring lingo
Trite manifesto�s concocted by member of government ministerofstate
Wide-ranging groups of organisms by lake general
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