An indent is a clip identifying which channel you are watching. To date, there has only been 1 Ident for EastEnders featured, with two further edits made in later years to shorten the length.
2010[]
In 2010 EastEnders celebrated its 25th Anniversary, during the anniversary week an ident was played before EastEnders aired.
BBC One - EastEnders Ident (Full Length)
Also during that week, another shorter version was aired, to most like help with scheduling.
BBC One - EastEnders Ident (Shorten Length)
2015[]
In September 2015 the ident was reintroduced with it becoming even shorter with character close-ups cut, due to certain actors not being in the show anymore and it may seem outdated.
BBC One - EastEnders Ident (Shorter Length)