I can see you have put some effort and thought in to your pipe routes which is good, but as has been said you can't combine the prv and condense like that.
The flex to the fused spur is untidy and should be routed away from the gas pipe work. It looks like you have an open end on the gas pipe work to the cooker maybe you hadn't soldered a coupler in there yet.
I don't understand the drain off on the return at that height as won't drain downstairs radiators and Boiler can be drained from its own drain off. Also from a design point of view I think a couple more clips would have held the pipe work straighter on the return especially with the weight of the filter hanging off to one side.
Always try and line all your clips on different pipes up. And when you have a number of passovers to do over the same pipe either do all verticals over horizontal or all horizontal over vertical it looks a little odd when some pass behind and some in front of the same pipe right next to each other. Where does the condense and prv run to at present?
I know it might all seem like negative criticism but please take it as the valuable feedback that it is, and don't stop asking for it. It is hard to stand up and show your work so well done for putting it up. It may be harder to accept the criticism, but if you take on board what's been said you will get to the standard you obviously want to achieve much quicker. Sort the bits that are not to regulation and Keep up the hard work.
Just wondering what you lads think of my work.
