Well, my prediction about England getting on top of NZ didn't exactly come about, not only because Matt Prior, lbw first ball, didn't lift the scoring rate, but with runs on the board and Jimmy Anderson looking dangerous (as well as getting his 300th Test wicket), I'd say that the home team have a slight advantage, but one which may well fluctuate in the next couple of sessions or beyond.
I didn't watch much of T1D2 though did catch up on the Foxtel highlights, From what I saw it was clear that the highlights of the day were (1) a continuation of NZ's tight bowling, with Tim Southee coming to the fore, (2) great swing bowling from Jimmy Andersson and ( 3) a refreshingly aggressive innings by Ross Taylor.
At present the match is in the balance, though IMO that balance is titled in England's favour, because NZ, notwithstanding their batting strength ( read Brendan McCullum and Kane Williamson) are still in first innings arrears and have to bat last against a tight England attack.
Time to resume my position on the couch.
New Zealand 4/153 (49.4 ov, Taylor 66/72b/13x4, Williamson 44*/137b/5x4, Anderson 15-7-32-3) trail England 232 (112.2 ov, Bairstow 41/107b/4x4, Root 40/114b/4x4, Trott 39, Cook 32, Bell 31, Southee 28.2-8-58-4, Wagner 3/70, Boult 2/48) by 79 runs with 4 1st inns wkts in hand: T1/2 D2/5 at Lord's.