The Queen commemorates Maundy by offering "alms" to senior citizens recommended by clergy and ministers of all denominations, in recognition of their service to the Church and to the local community.
During the service the Queen gives out the Maundy money to 88 men and 88 women - one for each of her 88 years.
Each recipient receives two purses, one red and one white.
This year the red purse contains a £5 coin, commemorating the 300th anniversary of Queen Anne's reign and a 50p coin commemorating the 20th Commonwealth Games in Glasgow this summer.
The white purse contains specially minted Maundy money.
This takes the form of one, two, three and four silver penny pieces, the sum of which equals the number of years of the monarch's age.
The Queen arrives at Blackburn Cathedral for the Maundy Thursday service.
People of Blackburn are lining the streets to see the Queen as she visits the town for the Maundy Thursday service at Blackburn Cathedral.
Royalist author Colin Edwards will be among the thousands of people welcoming the Queen to Lancashire at today's Maundy service.
The 73-year-old has met and photographed the monarch hundreds of times before, and today Colin will personally present her with his book, 'A Personal Portrait of the Royal Family.'
The book features many of the Queen's visits to the North West in a series of photos.
Every year at Easter Her Majesty presents special 'Maundy money' to local pensioners in a UK cathedral or abbey. Today crowds are expected to gather in Blackburn for the Queen's visit to the town's cathedral to continue an ages old tradition.
If you're having a day out to see the Queen and you're planning on taking some pictures we'd love to see them. You can E mail them to firstname.lastname@example.org or tweet them to @granadareports.
Preparations are underway in Blackburn for a very special Royal visit.
The town will welcome the Queen and the Duke of Edinburgh tomorrow, Maundy Thursday.
It will see more than 150 pensioners from across Lancashire honoured with Maundy Money, in a ceremony that can be traced back to the fourth century.
Amy Welch reports.
Details on the Queen's visit to Blackburn Cathedral for the Maundy service.Read the full story ›
The Dean of Blackburn, The Very Rev Christopher Armstrong, says he is pleased to be welcoming The Queen to Blackburn Cathedral in April.
He said today:
“I am delighted that the Cathedral has been asked to host The Queen for the Maundy Service this year. This is a huge privilege as well as a great responsibility on behalf of the bishop, the Diocese and the County of Lancashire.
The Lancashire recipients of The Royal Maundy are yet to be announced.