I think it's just 18 for NCS but by 1st May to work on their summer program, I know my niece did the program when she was 16 and was also a helper for two years too.
@ironoaks - yes a lot of paperwork and I think its a case of applying sooner rather than later. DD's DBS checked anyhow because she starts a tutoring job in a few weeks. Hopefully, she has enough experience with children having been an ELF at Christmas, Brownie Younger Leader and with the new Tutoring post (7 years plus). I think its a fab experience - just hope if she goes she will want to back!
One of my friends DC is just about to go on a Project Trust gap year to South Africa having raised over £6000(she has just finished at Peter Symonds).