Transit at LHR

I will be transitting at LHR from a BA flight arriving from CDG at T4 to a VS flight departing at T3.
This is the first time I am flying into LHR.
Any advice on what to beware of?
Is there a VS check in counter on the airside?
I am trying not to have any checked luggage, but what if I
do have bags to check? Will it complicate matters?
I have 3 hours between flights.
Thanks!
This is the first time I am flying into LHR.
Any advice on what to beware of?
Is there a VS check in counter on the airside?
I am trying not to have any checked luggage, but what if I
do have bags to check? Will it complicate matters?
I have 3 hours between flights.
Thanks!