This might be of use if anyone has to deliver to Oxford City and you have already made a delivery or collection South of Magdalen Bridge (A420 where the Cowley and Iffley Roads merge at the Plain). The 7.5t weight limit on Longwall Street at the High Street junction has been changed from 7.5t to 7.5t except for access, complete new signs up. Note that this is a weight limit within a weight limit so you still cannot use the A420 London Road from Headington to access the city centre unless you’ve already made a delivery.
Common sense to’ve changed it as myself and many others used Longwall Street before the change. 