Philip - I'm really sorry but in the last 10 minutes my running buddy and I have decided to do the chiltern 50k instead, because the organising of the race to the stones was just too complicated with the traveling and shuttle buses etc. I hope you find someone else to take the entry - have you tried one the Facebook ultra running Community page? Sorry I can't help this time.
Philip Riches - I am planning on entering this event in the next few days (once I've sorted out the rather complicated logistics!). I can't message you through here but if you read this in time and still have your entry space I can take it off your hands provided they can swap it over to me.
Kinsey - I agree basically with Caro on the point of having children at hospital appointments (we try very hard not to allow them where I work!), but I strongly suspect you'll be quickly in and out anyway, so hopefully it won't be an issue.
Caro - we've got an inset day that day too, and although we may be camping for the weekend we'd be back home by Monday afternoon, so we can touch base nearer the time. Appreciate you may not want to delay your journey home on a Monday evening though!