Finished!

Well one is done. Had big problems getting the seat back cover closed off and in the end rang the suppliers (who are local) and chatted it through with them. They said that the leather covers are the hardest to close off but it can be done with a bit of patience and careful stretching of the both sides. They also said that if I couldn't do it then to pop up and see them and they would do for me. 1½ hours later I had managed it! Result. I will leave the passenger side for another day - Wednesday perhaps.