"As soon as we knew there was mis-selling, we took action, " he told the MPs.
This was partly caused by settling mis-selling claims and fines related to the Libor rate-fixing scandal.
To make a complaint for mis-selling you must have been wrongly or inadequately advised.
And they point to the danger of fraud and mis-selling in the private sector.
The Financial Services Authority (FSA) said there was no presumption of mis-selling at the other seven.
Rival suppliers Scottish Power, SSE and Npower are still being investigated for potential mis-selling.
An increasing number of people have been complaining about the apparent mis-selling of "whole-of-life" insurance policies.
BBC: Whole-of-life insurance: Why complaints are rising fast
Either they mistrust private pensions, following the mis-selling of such investments in the late 1980s.
This could be done before mis-selling occurred, rather than afterwards, and could include institutions losing their licences.
Complaints to BT about mis-selling and "slamming" by phone firms are running at around 8, 000 a month.
These principles were in place all the way through the LIBOR scandal, the mis-selling and interest rate swaps.
FORBES: Is Barclays Going To Put Its Money Where Its Mouth Is On Performance Incentives?
Now there's the mis-selling of interest rate swaps, mainly to businesses, but also to some 'non-sophisticated' retail customers.
Then came the Equitable Life debacle and, as investment returns tumbled, a scandal about the mis-selling of endowments.
Add to that the way in which the policies were being sold, which created the "conditions for mis-selling".
But they could face fresh disappointment because of a deadline on claiming for compensation for any apparent mis-selling.
The same lack of a clear line of responsibility was partly to blame for the pensions mis-selling scandal.
He said he need not have resigned even though he was in charge at Barclaycard during one mis-selling episode.
And the claims of apparent mis-selling made by customers have not been proven.
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It has useful information on mis-selling on its website (see link on right).
Seven more banks have agreed to review the sale of specialist insurance to small businesses to check for mis-selling.
The energy firms decided to end the practice after Surrey Trading Standards last year successfully prosecuted SSE for mis-selling.
It is already having to clear up the mess left by the mis-selling of private pensions in the 1980s.
With more than a suspicion that mis-selling was at work, the insurers are loth to touch variable-rate policies now.
These shortfalls do not represent a scandal like the mis-selling of personal pensions.
It is important to remember when making a case for mis-selling, that losing money alone is not sufficient to claim.
It stipulated, among other things, that banks and other lenders will have to review old complaints about the mis-selling of PPI.
It has upheld complaints such as pressure sales, mis-selling, and sales when customers would not be eligible for the insurance anyway.
Barclays is currently reviewing its operations in the light of recent scandals over the fixing of Libor rates and PPI mis-selling.
BBC: Barclays consults staff over job cuts at investment arm
Mr Jenkins took over as chief executive last August, just as Barclays was being rocked over mis-selling scandals and other issues.
Faith in the long-term saving industry has been eroded by a succession of scandals, notably over the mis-selling of personal pensions.
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