Well presented and acted film containing many new faces to British film and movie goers, yet good entertainment that not just the Brits will enjoy.
Universal problem of loyalty and fidelity dealt with in interesting manner, and directed & produced with unerring insight into our hidden and exposed weaknesses.
The main male character appears to represent so many of us who languish in negativity concerning our misfortunes in life, but rather than present some super-hero who magically falls on his feet, the transmigration is honest and believable, making the film thoroughly enjoyable.
This will likely follow hotly in the footsteps of similar British-birthed films, such as Four Weddings and a Funeral - could David be the new Hugh Grant? I'll leave that for you to decide.