I don't want to muddy the waters but those finding their Glees are not showing up for recall for this work should check their VINs on Suzuki GBs 'genuine UK import' database here
https://www.Suzuki-gb.co.uk/motorcycles/about/extras/vin-checker/I say this as I bought my AL5 new in December 2015 from Orwell in Ipswich and subsequently found it wasn't listed as an official UK bike despite it having a Suzuki GB warranty and paperwork etc.
Orwell, who I find excellent, enquired and it turned out that my bike had been one of a batch of overstock from France that Suzuki GB has bought in when they found they hadn't ordered enough bikes.
They had employed a third party company to load all the details onto their systems for it to be shown as an official import but my bike never made it to the database. Mine may have been a one off or there may be other official GB bikes from the same batch that also missed the cut.
Suzuki UK were supposed to completely UK the bike re lights and warning decals etc and I have since found that one of the decals is in French and according to the manual there are several missing altogether (no bad thing as think unsightly anyway).
Bottom line, I have received a letter for the recall and my bike is on the recall database, and will be booking it in shortly at Orwells to try and get it done with the 7500 service.
Also going to get them to re enquire about the valve recall from last year as I was told it was not on the list at that time but may have been whilst the bike was 'incommunicado'.
Hope this helps.
Just an idea but would it be possible for the forum admin to bring this vin checker website to the attention to all the forum members with AL5 Glees just in case there are some not reading this thread?