Dear All, I wonder if anyone could help out with a question regarding UK Southern Federation Club boiler markings: Am I right in thinking that all boilers tested need to have identifying markings now so that boiler certificates can be matched up to boilers, or is this not a requirement? If it s requirement, roughly how long has this been a requirement? I'm just trying to do a bit of 'detective' work in order to try to reunite a boiler with it's long lost boiler certification details, which has paid off a couple of times in the past, so thought I'd give it another go!!! All the best, Rich. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.