Commercial advertisements are a
  universal  feature on English football club shirts, but, apart from the
  manufacturer's logo, they have yet to appear on the national side's jerseys.
  On 24 July 1979, a
  sad day for football purists, Liverpool announced their players' shirts would
  bear the logo of the club's sponsor, Hitachi, during the forthcoming 1979-80
  season in all but televised matches, for which Football League rules still
  outlawed shirt advertising.  The rest of the top-flight clubs soon followed suit in
  tapping this lucrative source of revenue, and the televised games restriction
  was dropped.  On 19 March 1984, the Football Association agreed to allow
  sponsor names to appear on players' shirts in the forthcoming F.A. Challenge
  Cup final.   UEFA prohibited commercial shirt logos in its European
  club competitions until the 1985-86 season, the first in which English clubs
  were banned from European competition following the Heysel Stadium
  tragedy. 
  Since the 1974-75
  season, when England first wore the Admiral kit
  under a new commercial arrangement in which the shirt manufacturer paid
  royalties for the right to promote and sell replica England uniforms, the logo of the shirt
  manufacturer has appeared on the England shirt (although the Umbro
  insignia had been visible on the goalkeeper's jersey earlier in the 1970s).  Over time, the manufacturer's
  logo has become more prominent, and it now appears not only on the jersey but
  also on the shorts and socks.  
  Since the present shirt manufacturer,
  Umbro, is also one of the England team
  sponsors, it could be argued that the
  Football Association already has allowed a sponsor's logo to appear on the
  England jersey.  In any event, some would consider it a short step from
  allowing the manufacturer's logo on the shirt to allowing a sponsor's logo to
  appear.
  Still, although the
  England team have had sponsors since 1994, the Football Association has thus
  far resisted the financial lure of allowing commercial logos other than the
  shirt manufacturer's to appear on the
  national side's jerseys.  And FIFA and UEFA have thus far refused to
  allow sponsor logos in national team tournament play.  Yet these football
  governing bodies have had the matter under consideration, and it may well be
  only a matter of time before they yield to the relentless lure of further
  profit and sponsor advertising of some sort adorns or mars--take
  your pick--the England
  shirt.  In our view, putting
  commercial logos on an England jersey alongside the three-lions emblem would be
  unsightly and unseemly, and we hope the Football Association continues to spare us that
  indignity.