Once you have obtained your Private Pilot's Licence PPL(H), you can then progress your training to obtain a Night Rating; allowing you to continue to fly throughout the UK airspace after VFR!
To obtain a PPL(H) Night Rating; A holder of PPL(H) applying for a night qualification shall have completed at least 100 hours of flight time as pilot of helicopters after the issue of the licence, including at least 60 hours as PIC of helicopters and 20 hours cross-country flight. The course must be completed within 6 months, however for the licence endorsement a certificate of satisfactory completion of the course can be issued by the FI or Head of Training, allowing the PPL(H) holder to use the priveleges of the rating as of immediate effect!