I did it! I completed C25K on Monday morning. It was just another run but I'm so happy I completed this programme without injuries or sickness. I can't run 5K in 30 minutes but I'm going to focus on consolidating my 30 minute runs 3 times a week and running a Parkrun by the end of this year. Next year I'll extend one weekly run a week to 60 minutes and start a 10K training programme. There's no rush. I'll take my time and enjoy my running. I feel fantastic.
This forum is an amazing corner of the internet full of lovely people. The advice and support has helped me every step of the way, so thank you all.
Good luck to all of you on your journeys throughout the programme. You can do it! C25K works!