purchasing an exam

[Yat Cheung]

Can anyone tell me the process for purchasing an exam to take in the UK? Do I buy a voucher from Sun and then schedule a time at a Prometric test centre using the voucher as payment. Or do I bypass Sun and go straight to Prometric. Or if I buy a voucher from Sun do I have to take it at one of there test centres. I've looked at the website but it's not entirely clear. If anyone has gone through the process in the UK (london area) I'd be glad to know of your experiences.
Thanks

[Simon Brown]

I would give Prometric a call and book it through them. That's what I've done in the past.
Simon (also in London)

[Simon Brown]

Actually, I'm wrong. You need to purchase the exam from SunEd first and then book the exam through Prometric. Here's a link to the Sun website where you can buy the exams on-line.
http://suned.sun.com/GB/certification/register/index.html
When you call Prometric, they will ask you for the voucher number and let you schedule a timeslot.