Hi Vernand/Jjimmyy! This is Jordi from Andorra. I have exactly the same problem. I've applied for initial 1st class in Spain and the authority is agree to issue the 1st class + OML restriction as proposed by the Aeronautical doctor, but not as inicial, it concludes as unfit because I couldn't fly solo for training and obtaining the license.
Did you finally get your initial 1st class + OML in UK? was this center aviationmedicalswessex?
Any other help is very welcome.
Thank you,