The 35-year-old is alleged to have conspired with another woman to rape a one-year-old girl, Cardiff magistrates heard.
He also stands accused of two incidents of conspiring to engage in sexual touching with two young children.
The conspiracy charges related to a period between May 1 and Monday, while the indecent images related to a period between August 12 and Monday.
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The shadow chancellor appeared to differ from his leader, who had been initially reluctant to blame the Kremlin for the ex-spy attack.
The Foreign Secretary said the Kremlin's tit-for-tat expulsion of 23 British diplomats would only impact Vladimir Putin's compatriots.
Sunday will be bitterly cold with snow for most.