Bath head coach John Connelly:
"You've got to look at the reasons why this loss was so high.
"Our line-out fell apart and they kicked very well for position in the first half.
"We had nine or 10 changes to our side from last week but we expected in to go better today. We lost some confidence - and when things start going like that you can't do much about it."
London Irish: Horak; Staniforth, Penney, Catt, Armitage; Flutey, Hodgson; Hatley, Flavin, Rautembach; Casey, Kennedy; Roche, Danaher, Murphy.
Replacements: Bishop for Staniforth (24), Everitt for Flutey (68), Willis for Hodgson (53), Coetzee for Flavin (63), Strudwick for Kennedy (66). Not Used: Skuse, Gustard.
Sin Bin: Gustard (80).
Bath: Best; Maddock, Higgins, Davis, Welsh; Dunne, Walshe; Barnes, Dixon, Bell; Hudson, Fidler; Beattie, Scaysbrook, Fea'unati.
Replacements: Davey for Welsh (68), Williams for Walshe (59), Lipman for Scaysbrook (53). Not Used: Hawkins, Loader, Delve, Abendanon.
Sin Bin: Dunne (29).
Att: 9,458