Should you trust that doctor?
You're viewing a single thread.
The Doctor is only on “TRUST WITH YOUR LIFE” as long as you aren't messing with (or have ever attempted to mess with) humans or other people they care about... otherwise they're on “RUN, RUN VERY FAR”.
You don't want to be an incidental character when The Doctor is about.
You also don't want to be his companion...you're best off jumping to a different reality and getting far away from London.