Not sure if the @3dtechs have a “go to” supplier for filament but I used this company a few years ago for some micro drill bits and have been on their mailing list since so thought I would pass it on. They seem to be filament specialists.
My drill bits were ordered from Holland between Christmas & New Year and arrived within days so I can’t fault their delivery ! Today’s e-mail seems to have a vast array of filament availability, and I see that they now appear to have a warehouse in the UK.
I’ve no idea what it all means but someone else might find it useful for the Space or even for personal use !! I’ll leave it with you all !