WTB: [UK] APC 3.5mm adaptors to SMA/N and M-M / F-F

[alan.bain]

After switching to 3.5mm cal standards for the VNA I'm rather short of 3.5mm adaptors so looking for

3.5mm M-M and F-F and
3.5mm to SMA (M-M/F-F)
N-m to SMA connectors (gender of connector on adaptor not mating component).

Limited budget domestic setup - so looking for used but not destroyed (or Chinese ones that don't pass a gauge test!). 

Alan