For the past three years Shell has used Prism for PR and Signature Sponsorships for hospitality on the account, but it now wants a single agency to handle the brief.
Shell Brands International marketing and communications manager Americo Silva said both contracts were due to expire at the end of this year.
'There are many contact points between PR and hospitality, and there are several agencies in the market offering both these services,' he said.
Proposals that combine 'the highest added value and cost-efficiency' will win the contract, said Silva, although Shell had not ruled out the possibility of reverting to separate contracts if combined bids did not offer improved service. Prism and Signature will be invited to repitch, Silva added.
Prism account director Peter Secchi - who is joining Tottenham Hotspur FC as a press officer later this month - confirmed the agency would repitch, explaining that its current work was a mixture of advisory support and direct PR.
'Shell held an event in Prague where Reubens Barrichello drove a Ferrari around the city centre and we advised Shell's Czech office on the best way to cover it,' said Secchi. 'But we're also in the pits on race day, talking to journalists.'
Shell will announce a shortlist at the end of June, with a decision expected by October.