Keith, I think you found the answer, but just in case:
http://en.wikipedia.org/wiki/MPs_elected_in_the_United_Kingdom_general_election,_1997
Affiliation Members
Labour Party 418
Conservative Party 165
Liberal Democrats 46
Ulster Unionist Party 10
Scottish National Party 6
Plaid Cymru 4
Social Democratic and Labour Party 3
Democratic Unionist Party 2
Sinn Féin 2
Independent 1
UK Unionist Party 1
The Speaker 1
Total 659
Notional Government Majority 179
Effective Government Majority 180