Mick Cash, the RMT's senior assistant general secretary, said Mr Crow's death had rocked the trade union movement, both in this country and around the world.
The thousands of messages of condolence from every part of the globe are a testament to the courage, leadership and strength that Bob shared with so many people.
Whilst Bob Crow's funeral itself will be a strictly private affair, his friends and family recognise that many people will want to show their solidarity, respect and support, both on the day itself and on May Day.
These arrangements give everyone a chance to play their part.
More top news
Some 26% of online shoppers complained of poor delivery service.
Salisbury has been named among the top 10 cities in the world to visit by travel guide Lonely Planet.
Adverts targeting benefits claimers will remind them to notify authorities of any changes - or face a criminal record.