Prices can be all over the place. In smaller spas around Camden or Hackney, you might get a solid couples massage for around £110–£140 total. But if you're heading to a fancy hotel spa in Mayfair or Covent Garden, expect something closer to £250–£350, especially if it includes extras like Prosecco or a steam room. The real question? Are you doing it for pure relaxation or to treat yourselves? Either way, check weekday offers, places in Shoreditch and Notting Hill often drop prices midweek, and you get the same treatment for less fuss.