British Transport Police Essex has informed commuters that they will be stepping up patrols.
The Met Police have also stated that there will be more officers on patrols on the streets of London.
After the Westminster attacks, there was a number of low key reassurance patrols by Essex Police in the Thurrock area.
An emergency number is available for those who are concerned about loved ones or anyone who may have been in the area: 0161 856 9400
All political campaigning for the June General Election has been suspended.