
The deal saw Jellyfish fend off four competitors to win the account.
Under the agreement, Jellyfish will create individually tailored landing pages for Brightside Group to target the automotive sector.
Rob Pierre, managing director at Jellyfish. said return on investment was under increased scrutiny in the current economic climate, but noted that Jellyfish would fulfil Brightside’s expectations.
Alexandra Phillips, an account manager at Brightside Group, said: "Jellyfish demonstrated a real depth of knowledge about financial sector marketing and presented us with a truly compelling pricing structure."
Founded in 1999, Jellyfish employs more than 70 people, having worked with clients including Skype, The Guardian, Time Out, Which? and Cancer Research UK.