As the Standard Service offering plus:
All required site visits included in the annual fee
Notification of Operating System and Major application updates
& service packs
Remote Installation of updates & service packs if required
(where applicable)
Premium Support costs from:
up to 50 users £11,000 p/a
50-499 users £14,500 p/a
500-999 users £18,000 p/a
1000 users+ £25,000 p/a