Jeff Smith, Labour MP for Manchester Withington, represented south Manchester residents at the service at the Glade of Light Memorial monument at Manchester Arena on Monday.
The memorial commemorates the victims of the terrorist attack at an Ariana Grande concert at Manchester Arena in May 2017. 22 people were killed, with 1,017 injured.
The Glade of Light is a garden memorial created as a space for reflection and remembrance.
Its centre piece is a white marble halo bearing the names of the 22 people who lost their lives.
Families of those who lost loved ones have been able to place personalised memory capsules, containing mementos and messages, inside the halo.
The service was attended by bereaved families and friends of the victims as well as some survivors of the attack and those involved in the response effort. The Duke and Duchess of Cambridge also attended, with the Duke of Cambridge giving a speech.
Manchester will also mark the anniversary of the bombing on 22 May and the memorial will be open to the public for people to visit.
“I was honoured to have been able to attend this powerful and moving remembrance ceremony, along with the families and some of those most affected by the 2017 Manchester Arena bombing.
“We came together to remember the 22 individuals who lost their lives, and to think of the thousands of others whose lives were changed forever by those tragic events. The memorial is a beautiful tribute to those we have lost and will help keep their memories alive.”