I've been shopping around for weekend car hire, just booked from 1 - 4 July (three days) for £44.89 from Hertz.
This was for a Ford Focus (Group C) - the cheapest was £41.40 for group A or B. (My location: Oxford.)
Seems like a good deal to me, with 10% Quidco too - I usually end up booking with Enterprise, but a similar car was showing as £56.95.
Edit to add: this is for pre-payment deals only.