@Nosejug very happy to answer anything about DE either on here or message me (but tell me f you've messaged me in case I miss it)
As a couple we've always been told DE likely the plan for us as I have poi (prem ovarian insufficiency) but we did a round of OE at gcrm to sort of close my own eggs in my mind. We likely would have had more luck if went when we were supposed to at gri - before covid but then they said it was too late after.
We started seriously looking at DE clinic fairly recently. As soon as we had our failed gcrm cycle review appt (June) we went on to their waiting list but it is around 2 years long. And also asked for rereferral to the Royal but for DE and my understanding is that it is also around 2 years long.
If you have a known donor already planned then any of these are much much shorter. It's the wait for the suitable donor that is the issue.
We've joined a waiting list for a clinic in England and they seem to be much shorter waits (6-12 months). We have paid to be on the waiting list now. Where as gcrm the list is so long that you only pay when you get closer to the top of the list!
Its prob different for every clinic but our experience so far is that you need to submit the characteristics of the donor that you are looking for. And obviously all medical history and prev cycle info etc.
And then have a consultant initail consultation and an implications counselling session.
Spain is an option. We ruled that out as a plan A as we would prefer our child was able to trace the donor when they are 18. This isn't allowed in Spain (unless you somehow track them down with dna test kits). Also I'm not great at flying - I like it but often get unwell from travel etc so seemed safer to have closer as the plan.
If you go to Spain you will have almost immediate treatment I think. And there is the options of treatment with grfc at gri in conjunction with Spain. Gcrm offer similar in co Junction with a Spanish clinic. So you are only flying out a few times rather than for all scans etc.
I sat for ages one day and went through all the clinics and the different options etc.