My 2 week old has been rolling one his side whilst sleeping since we brought him home from hospital over a week ago. He also then wriggles his way to the side of the bassinet/cosleeper wall. Aside from watching him his entire sleep & repositioning him, what can we do?

Many babies will wriggle & change position (like you describe) at a young age.
While most babies do not roll intentionally till about 3 months, some do roll early.
Also, some babies just do not respond well to wrapping & like their arms free.
Often these babies like their arms free or like to touch their face or suck fingers & will wriggle to get free.

You could consider moving him to his cot &/or cease wrapping or wrap only under her arms (ie with arms free as for 3mth old)).
Baby needs arms free & the space of the cot to roll safely.

Red Nose recommends to “modify a wrap” once baby is around 3 mths of age in preparation for rolling (if they are not already rolling)
https://rednose.org.au/article/wrapping-babies

Once baby is rolling or making an attempt to roll, then wrapping needs to be ceased.
https://rednose.org.au/article/wrapping-babies
Once baby is showing signs of being able to roll, it’s time to move baby to a safe cot – this is usually around four months, but it will depend on your baby.
https://rednose.org.au/article/bassinets

If he appears to be intentionally rolling, please see the following info
https://rednose.org.au/article/what-do-we-do-now-that-a-baby-has-started-to-roll-over