Three Aviva Premiership rugby union teams are based in London, (London Irish, Saracens, and Harlequins), although currently only Harlequins and Saracens play their home games within Greater London. London Scottish and London Welsh play in the RFU Championship club and other rugby union clubs in the city include Richmond F.C., Rosslyn Park F.C., Westcombe Park R.F.C. and Blackheath F.C.. Twickenham Stadium in south-west London is the national rugby union stadium, and has a capacity of 82,000 now that the new south stand has been completed.