NOW THAT'S WHAT I CALL MUSIC! 55 by NOW SERIES (UK) has sold 600,000 copies in United Kingdom.
NOW THAT'S WHAT I CALL MUSIC! 55 certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 United Kingdom |
600,000 | 2x Platinum | 8 August, 2003 |
United Kingdom Sales: 600,000
Certification / note: 2x Platinum
Certification Date / sales as of: 8 August, 2003
|
| Total sales | 600,000 | (in 1 country) |
Total
Sales: 600,000
(in 1 country)
|
Year-end chart performance for NOW THAT'S WHAT I CALL MUSIC! 55
| Chart 2003 | Rank | Sales |
| UK Albums |
27 | 580,000 |