And to clear up an earlier point, CAP493 (MATS Pt1) DOES require the word degrees to be used after headings ending in 0
ie "turn left heading 180 degrees" but if it doesn't end in a 0 degrees is not required
ie"turn left heading 185" is fine.
Don't believe me?? The reference is MATS Pt1 Appendix E page 7 para 4.1.4