Postboxes & Post Office
All postboxes in the area, except one, have the same Last Collection Times: Mon – Fri 9:00am, Sat 7:00am. (Sunday no collection). These are red markers on the map.
There’s a later collection on the High St, opposite the Post Office (between Neighbourhood Organic and Eye Care), the Last Collection there is Mon – Fri 5.30pm, Sat 12:00pm. This is the bigger yellow marker on the map below.
If you’re desperate, there is a half-hour later collection on weekdays (Monday-Friday 6pm, Saturday 12pm) at the Camden Delivery Office at 1 Barnby St (just off Eversholt St, between Euston and Mornington Crescent). Get directions here. Be warned, their website says, “Last collection times may vary and can be as early as 30 min before closing time” (but it doesn’t tell you when closing time is...).
Post Office
The Kentish Town Post Office is in the back of the Greetings card shop, about half-way up on the west side of the High St. The address is: 251 Kentish Town Road, London, NW5 2JT.Their opening times are 08:30-17:30 Mon-Sat, closed Sunday. Opposite the post office, across the street, is the postbox with the later collection.
You can see all the services available at the branch at their official website.