Do not assume it is in alignment, its a Raleigh. Take a thin string and pull it tight from dropout to dropout with a big turn around the headtube, with the cranks in the correct position and possibly waterbottle off you can now measure the distance from the string to each side of the seattube, I bet its off. If it is you need a LBS that can align it for you. If it strings happy, then you need a flat steel or alloy edge to rest against the inside of the lrge chainring with the chain off, and possibly the front shifter as well, the center space between the rings should line up with the middle cog center as one extends the straight edge back, if the frame is straight, but the chainline off often one can adjust the hub spacing. If this bike is all Campagnolo, I would bet on the frame.
When I worked for a Raleigh dealer decades ago we cold set many a bike up to and including the Professional.