Hire lens for F1

[HouR]

Hi guys,
Going to Silverstone this year for my first live F1 race.
I have a Cannon 400D but only the stock 18-55 IS lens off the 450D.

I was thinking about hiring a lens to take with me to get some better shots and also to allow more zoom.

Can anyone recommend a good lens for motorsport use and also recommend a lens hire site?

Budget is £100 absolute max but would prefer lower.

Cheers,

ash

 

[HouR]

Cheers guys.
The following lens a good shout as they say IS is not required when shooting moving objects?
http://www.lensesforhire.co.uk/canon-ef-70-200mm-f28-l-usm-6-p.asp

edit: just seen that's only 200mm - 300mm not available - will check some other sites

 

[HouR]

thanks for all the info guys, especially Nexus.

Will look at the 100-400 now to see if any are still around.

It is tempting to get the 55-250 as I know I would use it a lot.

Decisions decisions...