To see what broadband speed you're getting, go to www.speedtest.net and click "Begin Test" to check your connection's latency (network delay), download and upload speeds.
Here are my results from 2011, using the fantastic Zen Internet £25 per month package:
Another service worth trying is hosted by Comparitech, and they claim to donate $0.01 per speed test (per user) to charity.Give the Comparitech broadband speed test a go!
Another interesting service is the Net Index, powered by Ookla, which shows user data across the world and within your own region. Here is the link to my region (Norwich): Download Index for Norwich, United Kingdom. It shows that Virgin Media and BT deliver the highest speeds, with Sky and Orange considerably slower.