Spot on nottsgriff. Re: t-shirts, though I never even saw them before the race, or after. Wasn't looking or fussed to be fair. I came in through Stratford Rd entrance on foot up through where the finish was, to the start. Apparently there was a tent, must have missed it.
Route was decent I thought, not too tough but undulating. I would just say re: water. A 3rd water station would be better off at 10-11 miles after that tough section, rather than 9. As it was cold and wet, probably didn't matter, but in warm weather, the last 4 miles would have been hard on first-timers. The water given out was a waste also. Most I saw had two or three sips and threw away the half-litre bottle. Small cups are sufficient if you have 3 water stops in a half. No-one wants to carry a bottle of that weight for half a mile. That's 9,000 or so bottles, a waste of money imo.