Here's the key point though. From the HESA report:
The publication provides detailed results of the Destinations of Leavers from HE survey, which asks graduates what they are doing six months after graduation.From the IPPR one:
This is the equivalent of 280,800 organisations across the UK, potentially offering a quarter of a million internship places over the summer.Normal university degrees finish in May-July so six months later is November-January. Definitely not summer time. Problem solved.