the meta tags you use on gasregd.com are
gas engineer gas installer electrician solar plumber sparks
the .co.uk is going to a holding page...
the plumber services one has
<meta name="google-site-verification" content="P9TAL0yYvPd05TYkuh1RzsdFKUFRX2SbCuzVFbRMVQk" />
<meta name="alexaVerifyID" content="rB3cofeY2QI1HjXEzmDRrvSkpF4" />
<title>Dereham Services > Electrician Southampton > Electrician New Forest</title>
<meta name="description" content=" Dereham Services is a professional plumber and electrical company with a vast range of experience and knowledge covering Southampton, New Forest, Bournemouth and Poole, Specialising in Electrician Southampton, Electrician New Forest. "/>
<meta http-equiv="Content-Language" content="en-UK">
<meta name="keywords" content="Electrician Southampton, Electrician New Forest, Plumber Southampton, Plumber New Forest" />
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I would stick with one address or the other and just webforward. unless they are both hosted on the same server. as you can often monitor page views from the control panels.
the plumber services one has the better tags on it. but they may not be directly linked from the gasregd pages too.
Rob