Rail services between Maidenhead and Paddington were disrupted this morning leaving passengers facing cancellations, delays and crowded trains.
A spokesman from First Great Western said that problems with Network Rail signals and infrastructure had a knock-on effect on early services.
Services should have returned to normal after 9am, but services between 7-8.45am were disrupted by the problems.
A helicopter crash in London has also caused major delays on trains from Windsor to London, due to the closure of Vauxhall Station. For more details click here.
Was your journey affected this morning? Let us know in the box below.
UPDATE: One passenger told the Advertiser and Express: "They laid on two coaches instead of five on one of the most overcrowded services in the whole of the United Kingdom.
"During the journey one gentleman close to me fainted. He would have collapsed had we not been so rammed in like sardines.”
A First Great Western spokesman said problems with Network Rail signals and infrastructure had a knock-on effect on early services this morning disrupting several services between 7am-8.45am.
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Police officers can be seen at Ten Pin Bowling in Maidenhead tonight following an incident earlier today.