Yes, if the barrel is not stamped .22 on the top, it is not from the Webley factory but one made in Turkey.
These were made to suit the Turkish lower body after the Webley factory closed and not that compatible with the OEM Webley/ Supplied to Beeman/USA model you have there.
Luckily for you, your main body is a true English Webley meaning the barrel housing ears are of the better quality, having 0.1 mm to 0.15mm of clearance on the barrel for good barrel relocation quality.
Not so much the Turkish version with 0.2-0.3mm of clearance.
You also get the longer guide rod.
For other shooters, it's best to get Turkish barrels to match Turkish made pistols and Webley
barrels for English Webleys.