You will not be able to contact Sony now until next week so I suggest you wait until you return to the UK.

Your Vaio is now out of warranty so you will not be able to use email or the 0870 helpline.  You need to contact Vaio Support on the Out-Of-Warranty premium phoneline and buy a replacement set of Recovery Discs.  This is the only way you will recover the preinstalled software as most programs are not available for download.

There will be a charge for this as you should have made Recovery Discs when you first bought the Vaio - Sony do give several reminders to do this to safeguard against a hard drive failure.  Hard drives still fail quite frequently as they remain liable to damage from knocks and vibration.

Call the premium phoneline 0905 0310006 when you return to the UK as the discs will have to be sent to you by courier.