Gresham College was founded in 1597 and has been providing free lectures within the City of London for over 400 years.
On its web pages you can find lots of free videos of past lectures and stream live lectures. There are many mathematics videos, including some people you are very familiar with.
These give you access to a wide range of scholarly content purchased to support learning, teaching and research in the university.
Key Features / Benefits:
TED is owned by a nonprofit, nonpartisan foundation. Its agenda is to make great ideas accessible and spark conversation. You can go on their site and watch short talks (18 minutes or less) from inspirational thinkers.
The University subscribes to the IEEE database known as IEEE Explore. To access this you will have to log in via the My learning/Learning support pages in the portal. The database includes a complete set of video tutorials to help you with your search, just select the tab GET HELP.