I just realised I hadn't posted about the new arrival. He finally turned up on the 12th March, once things started they went very fast and he turned up in just over four hours. He weighed in at 3.8kg (8lb 6) and is fine and healthy. I am feeling much better as the SPD seems to have gone almost instantly.
We are going to call him by the on-line nickname of Treestump for many reasons including it was suggested by his big brother (as a serious name but he is four and also suggested stormtrooper and pom-pom) and he was a few days late so his skin was dry and cracked like bark.