Greater Anglia trains departing and arriving in Norwich have been delayed, and some cancelled due to hot weather.
Trains between Reedham and Oulton Broad North due to high temperatures affecting the railway infrastructure.
Some services were cancelled, these included the 12.50am Norwich to Cambridge and 1.36pm Norwich to Great Yarmouth along with the 2.28pm Cambridge to Norwich and 2.17pm Great Yarmouth to Norwich service.
Greater Anglia have said that no more trains are expected to be cancelled but a speed restriction will be in place until 5pm. Forecasters said temperatures in some parts of East Anglia could reach as high as 29C on Saturday.
Speed restrictions have been put into place to stop the already hot metal tracks from getting damaged.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here