[DLMURL="http://www.homebase.co.uk/webapp/wcs/stores/servlet/ProductDisplay?langId=110&storeId=10151&partNumber=1675441"]Mira Pace Adjustable Mixer Shower from Homebase.co.uk[/DLMURL]
Mira Pace is adjustable, sorry for Homebase link but it gives you the specs.
Be wary with the Mira Minilite if it's running off a combi and the pressure is above 2.5 bar.
Water hammer and flow noise are both problems I've encounterd.
[DLMURL="http://www.homebase.co.uk/webapp/wcs/stores/servlet/ProductDisplay?langId=110&storeId=10151&partNumber=1675441"]Mira Pace Adjustable Mixer Shower from Homebase.co.uk[/DLMURL]
Mira Pace is adjustable, sorry for Homebase link but it gives you the specs.
This would bring it nearly 2 inches out from the wall? just a bit of advice for anybody else reading this, do not use this option, would not work and would end up taking back (unless the pipes will go back into the wall (very unlikely)