Many Thanks for your reply, however when we execute:

RESTORE DATABASE UMonitorDB

WITH RECOVERY

we get:

Msg 4303, Level 16, State 1, Line 1

The roll forward start point is now at log sequence number (LSN) 428647000013823600001. Additional roll forward past LSN 428648000016889500001 is required to complete the restore sequence.

Msg 3013, Level 16, State 1, Line 1

RESTORE DATABASE is terminating abnormally.

Do you have any other suggestions?

Philip