Dave, it’s not clear why your business is not showing up in the Google search. If you do not have a G+ account for it, then adding one would probably help.
With a simple change to the code you can restrict the search to businesses within the UK. Edit the review-wave-gplaces-reviews/js/rw_gplaces.js file in your plugins directory. Change the following line from:
var autocomplete = new google.maps.places.Autocomplete(this);
to:
var autocomplete = new google.maps.places.Autocomplete(this, { componentRestrictions: {country: ‘gb’} });
Note, however, that even with this change I was not able to find your business by name with the G+ autocomplete search. I was, however, able to find it by address with or without the change; although your business information did not come up properly this way.