Vodafone, at this point in time, does not offer static IP address options in the traditional ISP sense.

From an enterprise remote access perspective, Vodafone offers products that allow for direct access into an enterprise network environment.  This is essentially facilitated by a private APN.  These private APN's can have an IP schema configured that meets the remote access requirements - including static IP addresses.

I am assuming your question relates more to the former, so you might want to check out this posting about Vodafone's current APN set.  Depending on your requirements, one of these public APN's might be of use.