I've searched old posts but there's nothing recent about this.
Please can anyone in London recommend a decent cleaning company where you can book online? I have used Hassle.com (now Housekeep) and Helpling and both are crap! Helpling get you trapped in a contract you don't want and the Housekeep "cleaners" appear to never to have cleaned anything before in their lives. I've currently got one slowly consulting a piece of paper on how to clean a bathroom. 
Are there any companies where they are actual professional / trained cleaners?
Ideally I'd like an online booking system or app as my work is changeable and I'd like to book slots a week or so in advance when know when I'll be working from home. We only need 2 hrs a week but just want someone who can get on with it and do a professional job!