They’re still there, but tend to be only for 1st years.

When I go to uni for 8 months in a year, where should I live?

The ONS has multiple values depending on which selection of prices you’re interested in. EMG. With/without fuel, and one assuming a standard shopping basket which they regularly update to make sure it’s what people are currently buying.

The BBC did an April Fools day joke along these lines too. Perhaps one is based upon the other.