Alastair Cook's losing debut as England captain was today compounded by the loss of 20 per cent of his match fee for a slow over rate.

South Africa posted 241 for six - the second highest 20-over total ever - as the hosts secured an emphatic 84-run victory in the second Twenty20 International at Centurion yesterday, with Cook deputising for Paul Collingwood, who had a stiff back.

The International Cricket Council today announced England would be fined for a slow over rate, with the players losing 10 per cent of their match fees and Cook, as captain, fined double that amount.

An ICC statement read: "Alastair Cook's side was ruled to be one over short of its target at the end of the match when time allowances were taken into consideration."

Should Cook, as captain, be found guilty of two further similar offences in Twenty20 Internationals over the next 12 months, he will receive a one-match suspension.