I've unfortunately never had the pleasure of visiting a terma however from the detailed reports on the site I have a pretty good idea what they are like. In the UK "saunas" are much smaller usually either a flat or a converted small shop with a flat above. However in Manchester there is one establishment which comes close to being a terma and that is Chesterfields.
It's situated in the City Centre and has been converted from a large old mill. There is a large upstairs room with big screen satellite tv, pool table, bar, sauna and steam room. There the girls sit around and will happily chat to you or play pool with you all day. The entrance fee is £15, this covers entry, use of the facilities and 1/2 hour in one of the massage room downstairs which have a jacuzzi and massage table. The girls then charge you from £40 for full sex.
They usually have 3 to 4 girls on and the quality is OK.
My particular favorita there is Tachi, she's half Brazilian, half Spanish and a student at the local university as are a lot of the girls there.
So your Spanish skills will come in useful over here after all.
It's a friendly, clean place to relax and can be recommended. They have a website www.chesterfields.co.uk which is good for details of the location and facilities but unlike most UK websites gives you no idea what the girls are like.

Thanks for the info.

Moondog

moondog, check out punternet.com, it will give you all the info you need for the uk