Price Cuts Propel UK Sales of Xbox, PS2  LONDON (Reuters) - Last month's back-to-back price cuts by  Sony Corp &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=6758.T qtype=sym infotype=info qcat=news"&gt;6758.T&lt;/A&gt; and Microsoft Corp &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MSFT.O qtype=sym infotype=info qcat=news"&gt;MSFT.O&lt;/A&gt; have boosted  sales of their PlayStation 2 and Xbox video game consoles in  Britain, retail sources said on Thursday.