I would just like to thank everyone who responded to my last request for advice. Especially Susanne Clarke and Gail Brodholt who both alerted me to the term 'Vanity Gallery'. In other words galleries you pay to represent you thus removing the impetus for them to sell on your behalf because hey, they've been paid already! As it happened Gail Brodholt sent me a link to Joanna Mattera's Art Blog which explains the whole business really well. In the interest of spreading the word to other artists who might need similar advice take a look for yourselves, one of the galleries mentioned contacted me.
I have learned something new today and needless to say I have no intention of pursuing it any further. This internet thing is great. An answer in less than 24 hours!