Aye, it struck me when I realised that we had a few BDUK cabs, that we must have a Huawei OLT. For a couple of years every single cab was ECI, then we got the BDUK Huawei cabs. More recently we have ECI cabs with a Huawei twin at the same PCP.
afaik most new cabs for the past few years have been Huawei, there's one exception that I know of which is a cab originally planned in 2003 but it got seriously delayed due to no access -rumour was that collapsed major duct.. and it didnt go live until about 2015 (after BDUK) but they still used an ECI as per the original plan.
I think it was you who said fairly recently that there were very few exchanges that didn't have a Huawei OLT - apols if it wasnt, and I should be giving credit to someone else.