Touching the incoming service is something completely different
Where does the incoming service end ? Genuinely interested as I always thought it was at the meter and included it so I'm pleased you have posted.
Edit:
Found the information on National Grid so it is presumably up to and including the emergency cut off valve or perhaps the isolator where fitted?
Cut and paste of the information on National Grid follows.
To arrange your own meter
reattachment and reconnection of
appliances
.
Please be aware that if you choose the option “My
‘Gas Safe’ engineer”, National Grid will only alter the
service pipework to the new position. You will be left
without gas until you have arranged for a Gas Safe
Registered Engineer with meter fitting qualifications to
reattach your meter and reconnect your appliances to
the meter. They should complete this work once
National Grid has moved your service pipe.
For Gas112
What flexibility do you have with regards distance to the meter? I feel sure it has to be in the same space, now I am guessing! (i.e. not the other side of the wall in another space!), but for those wanting to arrange to move only the meter like the OP, what are the limits, assuming an electrician will deal with moving the bonding when required