I got a TENS from boots! Really helped with my first in early labour (before you’re allowed any of the good stuff)
The exact company I used isn't available anymore but if you search 'that would be lovely if it’s not too much of a faff please? x
I forgot to add, make sure they are maternity tens machines and not general onesTens machines are best used in latent phase. They can be hit and miss, some swear by them, others find it a horrible sensation. Personally they were a godsend for me as I always have back to back labour's and it just helped distract me from the back pain.