It's take me since July, but tonight I did my last run; it wasn't my best but I manage a teeny bit further and a teeny bit faster each time. I'm still about 0.7 off 5k but I'll definitely keep going until I get there (and beyond I hope).
I just want to say thanks to the NHS for making this amazingly enjoyable and effective tool available for free. It's been a blast and even the runs that have been hard work have made me proud of myself.