I too have the brilliant Connect Nav + system in my 147 and the traffic/weather etc ... stuff is not available in the UK.
When I was sold the system I was told by Alfa that it was available but it never worked and after a number of postings on here and calls to Alfa they confirmed it would only work when tuned into a radio station containing these functions but as yet I have not found any.
The connect people at the other end of the green button were quite helpful about traffic and weather and a few other things but I cancelled that subscription and did not renew it.
Spend 30quid at maplins and get a trafficmaster unit. I did and it always gives great traffic info.
My 156 GTA with Connect Nav + should arrive next week, so I'm not got any first hand experience, but according to the web site of ITIS Holdings they provide the TMC service in UK and broadcast data via Classic FM.
I have Connect Nav+ and find it great. I have never had this feature working in Germany to be honest but then I have a German manual. Does anyone have a spare English one they would sell or even a PDF?
I believe the story goes like this. RDS TMC info is broadcast on Classic FM but in order to decode it you need a Sat Nav CD with the license codes. The Alfa Connect Nav+ does not have those codes for the UK.
Any idea that UK cars do have CDs that have TMC codes? and can anyone get hold of said CD and see if it is compatible?