Yes, they shagged (she was most likely a willing participant)
No, nothing will come of it
Side trivia: she was legal age under UK law. In Canada Harper raised the age of consent; ironically his justice ministry Toews banged and impregnated the babysitter.
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Age of consent in Europe - Wikipedia
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Age of consent in Europe. Only Ireland (Roman Catholic) and Turkey (Muslim) have an a of c over 16 years.
This the UK legislation:
The Sexual Offences (Amendment) Act 2000, became law in January 2001 throughout the UK, and thus equalized, regardless of gender, the age of consent at 16 for both heterosexual and homosexual acts (including, for the first time, lesbian acts), except those taking place between a 16–17-year-old and someone "in a position of trust" (e.g. a teacher), where the age of consent was raised to 18.
The Sexual Offences Act 2003 officially ended the concept of buggery in British law, as technically, heterosexual anal intercourse had still been illegal until the passing of this law. The passing of this law meant that there was no legal difference made between vaginal and anal intercourse, as well as sexual touching and newly added oral penetration and penetration by other body parts than penis or anything else. The Act also raised the legal age for pornography and prostitution from 16 to 18.
There have been various suggestions to lower the age of consent to 14 – in 1998 the New Labour government proposed this, but despite some Left wing and Youth support this had been dropped by early 2003 as lacking support, a decade later in early 2013 the suggestion by civil servants to lower the age of consent to 14 was rejected by the Conservative led coalition as offensive (at least under some circumstances) and attention was drawn to the impact of recent scandals on the reception to any proposals.