I've worked with Vodafone for a long time on Windows Mobile and it's a pleasure to now see a range of devices bearing a Window Mobile OS on their UK site. The QTEK 8020 smartphone is there along with the QTEK2020i Pocket PC Phone Edition and the VPA Compact (aka Jam). That round out the major operators in the UK now all offering Windows Mobile devices - O2, Orange, T-Mobile and Vodafone. Hurrah!
On a BusinessTime 200 tariff you can get the 8020 for £25 with a monthly charge of £22. For many organisations, a shared user plan is useful and Vodafone offers this with their ShareTime tariff's.