The number of times over 40 years I've heard certain Australians moaning about the pitch after losing away and claiming it was prepared to suit the home team
They ignore the times when it's happened in Australia of course.,
We get varied weather in England. This can, and often does, affect pitch preparation.
I used to know, to a small extent, a well known and highly respected groundsman. They are very protective of the Test pitch and extremely nervous about them - it's a very high pressure situation. ideally they want the game to finish after lunch on day 5, a match that finishes before lunch on day 3 would make them very nervous. Any pressure by home managers/selectors/captains to prepare a certain type of pitch would be firmly rebuffed.
The Trent Bridge pitch was fine. It did a little but you expect that on day 1 in England, and many pitches have done much more. The groundsman would have been sweating at lunch by, by the close he'd have been fine. It was very good bowling and feeble batting that produced the 60 all out.
FYI - I've seen a lot of pitches with more grass than usual this season - but only one produced excessive seam movement (there were long term issues at this ground that were being sorted). According to more than one groundsman this is because of a very dry winter. Rather than shave them and having them break up they are leaving more grass on the pitches which are holding together better. The grass is not that 'live' so the ball isn't seaming that much.
The weather forecaster on BBC this morning said it would be cloudy, with breaks in the afternoon, and humid in London today. It's not very humid atm. probably due to some rain overnight.