You may find the following small selection of links useful:
Kids and youth
Sabbath School lessons and resources
Missions
Guide Magazine
KidsView
Kids BibleInfo
Adults
Sabbath School Lessons
Online Bible Study Guides
Discover Bible Study Guides
Voice of Prophecy
Adventist Discovery Centre (UK)
Truthlink bible study series
Media and Other
3ABN braodcasting
Hope Channel
It is Written
Adventist Radio London
List of live streaming church services in the British Isles
ADRA UK