Hi all,
since all web services have been mentioned in this topic (onlineflashtest.com, hardingtest.com and https://www.hardingtestonline.com), I will comment according to my experience:
https://www.hardingtestonline.com seems the cheapest (they have a 50% discount right now, but also without it) and works great (I wrote about it in a different topic). They also offer corrections (£40/h – pretty expensive). Seems very professional.
hardingtest is also pretty affordable, not sure about the fixing prices. But has ftp upload which I personally don’t like. They also have free re-test, not sure about the other two.
online flash test seems very straight forward, you can definitely trust them – it’s clearcast! But the prices are very high.
Just a subjective point of view!
best,
OM