Specifically for us the uk offered clearer caps on sperm donor families from UK banks. Spain (if I remember rightly) is completely anonymous. We wanted id release donors where the child then adult has a right to data and identity as an adult. Personally I dont agree with completely anonymous donation, and think its not possible in this day and age where you can get a postal dna test so if my child did pursue it that the person they found would be aware that they could be found and open to it.
So there's some vague ethics. Should you offer a treatment for a 1000 that isnt scientifically proven? The UK tends to err on no, where as we felt we were paying for it and it was our money to burn for a chance at nudging the outcome. We preferred a more "give us the options and we will decide" others feel you shouldn't even be offering it
Things like multiple implantation. Again it doesnt massively increase your chances, there's strict regulation about it here so our clinic wouldn't let us try, abroad would. Obviously other than a marginal increase in success of a positive pregnancy test of a single pregnancy there's also an increase a risk of poor outcomes associated with multiple pregnancy (eg prematurity, twin to twin transfusion)
My weight and amh is a problem in the uk for ivf. Its frustrating when you cant even try for a baby (we are ivf or nothing) when people around you who are equally as heavy and heavier are concieving naturally. Equally where do you draw the line on how lower amh, weight, age etc?
All the ethics are grey.
I do think its important to raise though that its not always about money or bypassing ethics that people chose abroad
Our treatment here was poor, the clock is often ticking and the uk seemed to move at a snails pace so what took us two months abroad would have required many months here. Ignoring that we had to pause for weight loss, but we had missed appts that put us into the following month, then a missed prescription that meant we were pushed to the following month. Each month feels like a wasted chance but also youre aging each month. They tell you your fertility is dropping each week but for us we had 4 months of delays that were completely clinic delays etc that were un necessary