<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>AON PLC</nameOfIssuer>
			<titleOfClass>SHS CL A</titleOfClass>
			<cusip>G0408V102</cusip>
			<value>152209</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1526973</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1526973</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>AEROPOSTALE</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>007865108</cusip>
			<value>1645</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1015667</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1015667</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CITIGROUP INC</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>172967424</cusip>
			<value>386</value>
			<shrsOrPrnAmt>
				<sshPrnamt>6981</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>6981</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CITIGROUP INC</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>172967424</cusip>
			<value>160804</value>
			<shrsOrPrnAmt>
				<sshPrnamt>2911000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>2911000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CREDIT ACCEP CORP MICH</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>225310101</cusip>
			<value>222436</value>
			<shrsOrPrnAmt>
				<sshPrnamt>903550</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>903550</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CHARTER COMMUNICATIONS INC D</nameOfIssuer>
			<titleOfClass>CL A NEW</titleOfClass>
			<cusip>16117M305</cusip>
			<value>137849</value>
			<shrsOrPrnAmt>
				<sshPrnamt>805191</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>805191</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CHARTER COMMUNICATIONS INC D</nameOfIssuer>
			<titleOfClass>CL A NEW</titleOfClass>
			<cusip>16117M305</cusip>
			<value>58208</value>
			<shrsOrPrnAmt>
				<sshPrnamt>340000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>340000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CATAMARAN CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>148887102</cusip>
			<value>78447</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1284326</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1284326</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CATAMARAN CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>148887102</cusip>
			<value>18935</value>
			<shrsOrPrnAmt>
				<sshPrnamt>310000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>310000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>EXPRESS SCRIPTS HLDG CO</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>30219G108</cusip>
			<value>189389</value>
			<shrsOrPrnAmt>
				<sshPrnamt>2129400</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>2129400</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>EXPRESS SCRIPTS HLDG CO</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>30219G108</cusip>
			<value>85800</value>
			<shrsOrPrnAmt>
				<sshPrnamt>964700</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>964700</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>MOODYS CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>615369105</cusip>
			<value>108089</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1001196</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1001196</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>ORACLE CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>68389X105</cusip>
			<value>72982</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1810961</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1810961</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>PRA GROUP INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>69354N106</cusip>
			<value>127967</value>
			<shrsOrPrnAmt>
				<sshPrnamt>2053713</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>2053713</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>VALEANT PHARMACEUTICALS INTL</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>91911K102</cusip>
			<value>236024</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1062452</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>1062452</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>VALEANT PHARMACEUTICALS INTL</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>91911K102</cusip>
			<value>66267</value>
			<shrsOrPrnAmt>
				<sshPrnamt>298300</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>298300</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>WEX INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>96208T104</cusip>
			<value>85167</value>
			<shrsOrPrnAmt>
				<sshPrnamt>747276</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>747276</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>WELLS FARGO &amp; CO NEW</nameOfIssuer>
			<titleOfClass>*W EXP 10/28/201</titleOfClass>
			<cusip>949746119</cusip>
			<value>99690</value>
			<shrsOrPrnAmt>
				<sshPrnamt>4448481</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>4448481</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>COMCAST CRP CL-A SPEC</nameOfIssuer>
			<titleOfClass>CL A SPL</titleOfClass>
			<cusip>20030N200</cusip>
			<value>16424</value>
			<shrsOrPrnAmt>
				<sshPrnamt>274000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<otherManager>NONE</otherManager>
			<votingAuthority>
				<Sole>274000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
</informationTable>
