Just a thought can we not get the Spa people to adjust their policies
via equality legislation or via the Mayor of London's office?

I work in the public sector within the financial services arena, and we
are continually being asked to promote our sector to women and ethnic
minorities as they are under-represented by the sector. If we can show
that spa's in London or this one in particular cater mainly for women
then they (and the local authority) are duty bound to try to redress
the balance by promoting the services specifically to men.

The key bit is that that there has to be some form of market
intelligence to show that Spa's / this Spa favours women and then they
have to act – and are legally entitled to target men in particular with
incentives - to redress the balance - is it worth a go? How can we get
some data?