Would be easier to explain by diagram but not something I can do on the works PC. There is no problem with venting to atmosphere, it's all down to emissions based crap again. Just make sure you make it look 'low-key' as it could be a failure come MOT time if picked up... I still need to figure out how to get my crankcase breather pipe setup through an MOT, along with the lack of cat.....
Main pipe coming from the back of the bay in to the carbon canister (hard plastic one) - unclip it from the back of the bay. Get a vac pipe (8mm from memory), push it on to the white connector at the back of the bay and run the pipe in to the drivers side inner wing area to vent the tank.
Remove the canister and it's pipework, as far as the N80 valve attached to the inlet. This valve still needs to draw air in in order to avoid an EML, so I attached a small in-line fuel filter (motorcycle type) to the intake of this valve and hid it away under my intake
Et. voila - no carbon canister and no EML, yet as the valve is still doing its job the fuel trims/adaption is still active. Not sure on whether the fuel adaptions is active with the blocked canister (P0441 fault present), but unplugging the N80 valve stops the ECU adapting the fuel trims so it really needs to stay or be mapped out properly by the likes of R-Tech etc.