Wallace Ritchie viaja a Londres para celebrar su cumpleaños con su acaudalado hermano, quien le ha preparado un regalo muy especial.
 | Bill Murray | Wallace 'Wally' Ritchie |
 | Peter Gallagher | James 'Jimmy' Ritchie |
| Joanne Whalley | Lorelei 'Lori' |
 | Alfred Molina | Boris Ivanovich; el Carnicero |
| Richard Wilson [II] | Sir Roger Daggenhurst |
| Geraldine James | Dra. Ludmilla Kropotkin |
| John Standing | Gilbert Embleton |
| Anna Chancellor | Barbara Ritchie |
| Nicholas Woodeson | Sergei |
| Simon Chandler | Hawkins |
| John Thomson | Dimitri |
| Janet Henfrey | Ms. Goldstein |
| Terry O'Neill | Spencer |
| Donald Pickering | Sir Duncan |
| Cate Fowler | Frau Schuster |
| Terence Harvey | Herr Schuster |
| Cliff Parisi | Uri |
| David Hounslow | Wilkie |
| Adam Fogerty | Newman |
| Inday Ba | Des |
| Dexter Fletcher | Otto |
| Malcolm Storry | Inspector Cockburn |
| Andrew Woodall | Det. Sargento Malloy |
| Barnaby Kay | SWAT |
| Eddie Marsan | Atracador |
| Tat Whalley | Atracador |
| J.E. Freeman | Agente CIA |
| Maxwell Caulfield | Agente británico |
