Guest Stars Benedict Cumberbatch as Will Parker Indira Varma as Melanie Bellamy Steve Toussaint as Adam Lockwood Claudia Christian as Julia Regan Sharon Horgan as Katie Tate Darren Boyd as Nick Burnham Pip Torrens as Sam French Tom Goodman-Hill as Joe Reed Amber Aga as Laura Berthould Sarah Hadland as Claire Charlotte Hudson as Paula Kay Duncan Duff as Richard Pritchard Lucy Porter as Claudia Van Sant Preeya Kalidas as Anita Ratchathani Carli Norris as Sarah Holt Philip Brodie as Colin Kay Roger Barclay as Mitchell Oatis Joanna Bobin as Natalie Gosling Simon Scardifield as Nick Andrews Phil Nichol as Josh Cashman John Schwab as Miles Anderton Clare Wille as Frances Walsh Haruka Kuroda as Kyoko Ogura Kim Wall as Phil Curdridge Ralph Van Dijk as Brett Mackensie Sumit Bose as Andrew Clayton Derek Gibbons as Joe Randall Rob Butler as Andrew Farley Sian Jones as Wendy Fox Kevin Day as Gary Mills Ashley Blake as Alexis Fantom Chris French as Dan Evans Britta Gartner as Katerina Schultheiss Stuart Nurse as Sam Gregory Cassandra Bell as July Sheron Tom Skippings as Andrew Evans Max Digby as Andrew Adams Joanna Ampil as Michelle Wong Alice Arnold as Sam Foskett Jack Gustav as Johan Fleischer Lauren Ward as Alecia Nicholas Rowe as Ben Green Wendy Wason as Wendy Watts Robin Weaver as Penny Watson Beth Chalmers as Laura Hughes James Howard as Kevin Peters Ian Duncan as Todd Todmore Phil Nice as Russ Jon Briggs as Joe Alloway Sunita Shroff as Wendy Sandhu Melissa Lloyd as Sam Graham Roderic Culver as Richard Harbinger Luis Soto as Francis Xavier-Menensez Colin Stinton as Anthony Markovitz John Chancer as Tom Mitchell Kate Maravan as Laura Dunnford Lorelei King as Loren Peterson