I send all parecels by recorded delivery. Today I checked the tracking for 2 items I posted on Tuesday

[Saltire]

2nd class recorded. On the tracking status it says " We Have Your Parcel" it has been accepted at (the address and postcode of the Post office I posted them at).
Now that was on Tuesday that I posted them, does that mean they haven't actually left the post office yet?

It means they are in transit.