Flybe were the same at lgw, when it was swissport. The ramp team leader would be in charge of the turnaround. The gate staff printed out all the paperwork. At the end of boarding the team leader collects paperwork and doors closed.
Menzies tried the same at BHX with the Flybe contract and subsequently lost it due poor performance. I'm not sure how Swissport BHX run it now though.