Sorry, I meant to say zone entrances.
One of the zone entrances seems to be at the other end of Hodford Road from where you parked. The sign is on the right and it shows the controlled hours to be Mon-Sat 8am-6:30pm & Sunday 9:30am-6:30pm. There is also a sign on the left side of the road, Hours are Mon-Fri 11am-Midday. This sign seems to have been rotated so probably facing the wrong way. However that's GSV from June 2022 and may not be current.
The signs above, you posted a link to, are a prohibition on buses, except local buses. That's what the sign on the left just before the bus stop means. The also a no bus sign on the right of the road which doesn't have the local bus exception, at least on GSV, for some reason.
However the bus signs are of no relevance to you. There must be more CPZ entrance signs situated before the Hodford Road / Golder's Green Road junction. I'd say it's all too confusing, there should be zone repeater signs with the hours on the affected streets. See what others have to say.