My main concern with this race was that we were instructed there would be no registration on the day, and that it needed to be done on the Saturday afternoon.  This took a large chunk out of my Saturday as I didn't have access to the car, and had to travel there via London.  

Parking on the day was easy to find, and cost £5, and very close to the start/finish area.  

The start area is compact, fairly well laid out.  There weren't many toilets, but to be fair, queues were fairly small.  Waves were starting at different times, with the half-iron going early.  It's probably due to numbers in the water, but the sprint wave went off before us.  It would have been better (at least on the bike leg) for us to go earlier to avoid some of the traffic. 

The swim route had been changed by the water marshals, which was fine (four short laps).  There wasn't too much current and the water temperature was quite warm. 

There's a short jog across grass to the transition, where you pick up the bike, and head out to the road leading to the exit, then head on the main road to Henley and then turn towards up a long drag towards Nettlebed.  There was a reasonable amount of traffic, but to be fair, the drivers were pretty good (at least to me).  There's a short climb at the start which I found hard, and the road to Nettlebed is up but steady.  The first part is hard as there's corrugations on the road every 10 metres or so.  

At Nettlebed, you do a 180 degree turn on the roundabout and are joined by half-iron cyclists.  The descent on the dual carriageway is good, fast and smooth with plenty of room.  Both roundabouts were marshalled, along with a motorbike waiting along the road and a temporary traffic signal (could not be avoided, but if stopped 30 seconds taken from time).  It was a very wet, windy day and very difficult to avoid puddles (with potentially hidden potholes) at times.

Back into transition, you pass a water station on the way out.  It's a nice run, initially along the Thames, then back through some paths, and then through a quiet housing estate.  There were marshals at important points and a feed station (gels, water) nearer the end.  The course was well signposted.  

It wasn't a massively busy event, so quite relaxed, around the hub.  There were a few food vans.  There wasn't much local support, but as there was a lot of horizontal rain, it wasn't surprising! 

All in all, it's a small decently organised event.  I'm not sure if I'd do it again as I didn't like to travel to pick up my things the day before (only took a few moments), and I'd prefer to be out on the main roads earlier.