andyh told me I am talking rubbish
It most certainly appears to be the case. Definitely in the NW. Over the past week Ive also been using the magenta codelook a fair bit, and Ive seen exactly the same pattern in other area's. If the cab was 2012-2013 then the cabs are most likely to be ECI's. Prior to and after Huawei. I havent checked the S/SE though.
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Edited to add - out of curiousity - Ive just used Magenta to do a random check on each of the rollouts. To try and make it geographical Ive used a mix of Lancs for the NW, Sunderland for the NE, Devon for the SW & Kent for the SE. Choice was random, and I didnt set out to prove a point. It may not definitely prove a point anyhow because I am limited to a number of lookups that I can do.
Ive added some of the regional areas, but unfort forgot which was Devon (Plymouth) because I didnt think to record that until later and Im now out of my allowed lookups, but I think this gives a broad overview. There are a couple of exceptions but those all appear to be on cabs which are either delayed installs or infills of an odd cabinet where others in the immediate area were of a prominent type. This would make sense as no point installing a different element manger at the HeadEnd exchange for just a couple of cabs.
Eg
Phase 02 (2010-2011) - Huawei - NW
Phase 05a 2011 -Huawei - SE
Phase 06a (2011) - Huawei - NW
Phase 06b 2011 Planned early 2012 - ECI
Phase 08a 2012 - ECI - NE, NW
Phase 08b 2012 -ECI - NW
Phase 09a 2012-2013 - ECI
Phase 09b 2012-2013 - ECI & Huawei <--- Seems to be ECI's if earliest install to locality OR Huawei if an infill to an existing Huawei area. -NW
Phase 10b 2013 - ECI NE, NW, SE <------ but those delayed to 2014 got Huawei (ie Tunbridge Wells, Kent)
Phase 11a 2013-2014 - ECI - NW
Phase 11b 2013-2014 - ECI OR Planned FTTP NE
BDUK's - all seem to be Huawei