
I too cut my foot badly (2004) at Trentham, with visit to the local hospital and a week off work as a result. The water is awful, cannot advise on Uk 70.3, as I've never done it.
There are a couple of Welsh middle distances in June, which I and many on here can comment on, The Pembroke half and Bala Middle these are both excellent races, and offer good value for money when compared against 70.3. Bala has to be one of the most picturesque venues in Britain, the water quality is far superior to Trentham, and the roads are quieter and defo smoother, with the run being secenic to say the least, by far a better race. Hope that helps