The Saudi Embassy/Bureau in London requirres you to legalize your documents. Their guide can be found on the following web page:

http://portal.mofa.gov.sa/Detail.asp?InSectionID=6200&InNewsItemID=120951

also the Foreign & Commonwealth Office web page can be found :

http://www.fco.gov.uk/en/about-us/what-we-do/services-we-deliver/legal-services/Legalisation/

You do not require to have your documents translated for the Saudi Bureau or Embassy in your country. The translations are only need for when you are doing your paperwork in the University.

Please view the following page on the London Saudi Embassy website to download the medical report form.

http://portal.mofa.gov.sa/Detail.asp?InSectionID=6200&InNewsItemID=100851

When you get your Visa Number from the University you will have to process it on the website https://www.enjazit.com.sa. If you go to the embassy in London without getting your E number they will probably turn you away and tell you to go and get it.

A guide of how to get your E number can be found on the London Saudi Embassy website. http://portal.mofa.gov.sa/Detail.asp?InSectionID=6200&InNewsItemID=100852

Getting your E number will cost $10.50 USD.

Using the enjazit website is difficult because the uploading of the passport size photo is very problematic. You will have to fiddle around with the photo settings by making it smaller, maybe by making it black and white, you may even have to use different computers.