* Sino-U.S. trade talks conclude in Shanghai with no deal
* China June factory activity shrinks for third straight month
* Fed expected to cut rates by 25 basis points, more seen
* Pound hovers near 28-month low over fear of no-deal Brexit
* World FX rates in 2019 http://tmsnrt.rs/2egbfVh
LONDON, July 31 (Reuters) - Fresh trade war fears weighed on global stocks on Wednesday ahead of a U.S. Federal Reserve meeting with the dollar holding firm and Britain's pound subdued amid rising fears of no-deal Brexit.
Combative warnings from U.S. President Donald Trump cast a shadow over Sino-U.S. trade talks which concluded in Shanghai on Wednesday. Beijing attributed the lack of progress to Washington's flip-flopping.
The fresh trade tensions come ahead a U.S. Federal Reserve meeting which is expected to see interest rates reduced by 25 basis points (bps) in its first rate cut in more than a decade.
Yet the focus is on whether it will leave the door open for further easing to shore up the world's largest economy in the face of slowing global growth and the fallout from trade conflicts.
MSCI's broadest global stock index and Europe's pan regional STOXX 600 slipped 0.1%, the latter flirting with a fresh one-month low as worries over trade wars and Brexit offset encouraging signals from the earnings season. London's FTSE fell 0.3% while Frankfurt stocks gained 0.2% and Paris was treading water.
In focus were banks, with strong results from French lender BNP Paribas and Switzerland's Credit Suisse countering a poor report from British bank Lloyds. "Trade talks have finished without an agreement," said Justin Onuekwusi, fund manager at Legal & General Investment Management.
"Of course, it doesn't help that almost as a prelude to the conversation you get tweets that are quite antagonistic," he said, referring to a tweet by Trump warning China against waiting out his current presidential term before finalising a trade deal.
In Asia, shares ex-Japan fell to a six-week low with China mainland stocks down nearly 1% and Hong Kong tumbling 1.3%. Japan's Nikkei declined by 0.7%.
China data showing factory activity shrank for the third month in a row in July added to the sombre mood.
But U.S. futures pointed to main indexes opening higher. On Tuesday, major Wall Street stock averages ended slightly lower with the S&P 500 losing 0.26%.
After the closing bell in the United States, Apple shares rose 4.2% as its April-June earnings beat estimates and CEO Tim Cook cited "marked improvement in Greater China".
Expectations for Fed easing helped lift the S&P 500 index 2.4% so far this month. Fed funds rate futures are now fully pricing in a 25 basis point rate cut on Wednesday and another 25 basis point reduction by September.
"Exactly what happens today is far from a foregone conclusion," said Deutsche Bank's Jim Reid in a note to clients.
"Although the Fed have given no real encouragement to the notion of a 50 basis point (bps) cut it's worth noting that the last time the Fed began a series of rate cuts, in September 2007, their opening move was a 50 bps cut, and a similar 50 bps cut happened when the Fed began cutting in January 2001."
Trump on Tuesday reiterated his call for the Fed to make a large interest rate cut, saying he was disappointed in the U.S. central bank and that it had put him at a disadvantage by not acting sooner.
In currency markets, the dollar index traded flat around 98.064 after pulling back from a two-month high of 98.206 touched on Tuesday.
The greenback was also steady against the yen and the euro, with the former undermined on Tuesday by the BOJ's decision to refrain from expanding stimulus though it committed to doing so "without hesitation" if required.
Meanwhile the British pound hovered near a 28-month low hit the previous day on growing concerns about a disorderly Brexit.
Sterling traded at $1.2160, not far from $1.2120 marked on Tuesday. It has fallen 4.2% so far this month, on course to log its worst monthly performance since October 2016.
In commodity markets, crude oil futures rose for the 5th straight day, buoyed by a bigger-than-expected drop in U.S. inventories. U.S. West Texas Intermediate (WTI) crude gained 28 cents to $58.34 per barrel while Brent crude futures added 48 cents to $65.2.
Three-month copper on the London Metal Exchange (LME) was almost unchanged at $5,950 a tonne.
(Reporting by Karin Strohecker, additonal reporting by Sujata Rao in London, Hideyuki Sano and Stanley White in Tokyo, editing by Sam Holmes, Jacqueline Wong and Andrew Heavens)