Congratulations JD.
Check the .gov website above re the laws for child/baby restraints.
You could also try a reputable restraint supplier for ability to fit into a Morgan that does not have the new euro standard clips etc.
Also, speak to the midwife/hospital maternity unit as they would help too.
When

jnr had twins last May they had to be assessed for travel home, from N Wales to S Wales.....a long story!....and they checked to see if they were ok in a seat for the ambulance as they were 6 weeks prem born and 2 weeks old before release home.