Hourly van hire is a really useful service that's aimed at people who just need a van for a few hours and want to start and end their rentals on the same day. Unfortunately, it is not very widely available in the UK.
Europcar offers hourly van hire from all branches except airports. Vehicles can be booked for 2-8 hours, Monday - Friday (Mon-Wed only at Central London branches).
To get a Europcar hourly van hire quote, click here (just specify the times on the quote page).
No registration required, it's just like a standard rental from Hertz - click here
Hourly van hire from B&Q branches throughout the UK - in partnership with Connect By Hertz scheme.
You need to register with Connect By Hertz before you can rent a van but can then rent vans by the hour from more than 100 B&Q branches around the UK.