I used sperm from London sperm bank as I conceived my first In London and wanted to use the same donor.
If you have had a consultation ( so you count as actual client of Hewitt ) then you can start the process which is contact between Hewitt and London sperm bank to confirm Hewitt is hefa related and you have had necessary counselling before iui.
From memory I phoned Hewitt and got contact in centre who deals with bringing sperm from another sperm bank then I emailed London sperm bank and her together and then kept chasing both to check everything progressing.
Relatively quick, I think from six weeks after consultation I had my iui. The sperm is meant to arrive by the time of your first day of period ( when you confirm iui) for second and third iui obviously I had started bleeding which is how I know iui hadn't worked but because all forms and checks done I was allowed to go ahead with iui with sperm coming before I ovulated rather than by first day of period ( at my own risk but I spoke with lady at Hewitt to keep up to date and she was lovely)
No idea if they have 'in house' sperm bank you would have to check with Hewitt.
I would think sperm from sperm bank abroad may not be as timely ( so Hewitt knew days of delivery in uk) but you could check. I think there going back there was an issue with USA sperm bank and verification of hefa registered uk fertility clinics so sperm not being sent but that might have been resolved now.
Finally I think there was one nhs style sperm bank in Birmingham if I recall where sperm is cheaper but hardly any donors so you could be waiting a long time potentially for donor sperm from there...
Hope that's helpful, good luck xxx
Hhmmm@Dosmamas that's annoying, most literature I've read says after three tries of iui clinics tend to recommend something else... does it say that anywhere in Hewitt literature that you could challenge them with? good luck xx