Is there a strap on boss fitted, where the condensate pipe enters the soil pipe? May be difficult to put a strap on boss, but these are just as good (19mm ones).
I am not sure if this is allowed (although the rest of the install looks pretty neat to me) UP to be honest.
I can see a magnaclean filter fitted, but not sure if its fitted right and at the right point in the system without knowing the pipes, it should be fitted on the return side of the CH pipework. If its a combi boiler, which it looks like - there should be a PRV (pressure relief valve), this is a 15mm pipe the exits out the building and is turned into the brickwork or external drain.
Cowboy job, that's just a hole drilled into the soil pipe and the condensate pipe stuck into it. It has no seal should the soile pipe back up. You need a strap on boss to comply to manufacturers instructions.
I saw a simular arrangement wedged into a rain water downpipe a while back. Not as neat as this one though
Akshully, you could run a smear of pipe solvent around that join - both plastic pipes should be up for that?
Poor practice - how do you know how far its gone in. It could be most of the way through the soil pipe so a blockage is imminent. Simple job to solve, get 'em back if its been recently installed.
So its a resounding maybe then. It's been like that for several years. I just stumbled upon it because I was rewiring the boiler feed from a floor mounted surface switched fcu on to the old immersion spur switch and needed access. Why they didn't do that in the first place, dunno.