Alejandro Agag says ABB FIA Formula E and Motorsport UK have a "little plan" to bring the electric championship back to Britain.
Agag teased attendees of Sunday evening's Autosport Awards that he had a "secret meeting" with the chairman of the UK's governing body, David Richards, on Monday morning.
When asked about the nature of the meeting, Agag confirmed it was related to "bringing a race back to the UK".
"It is not easy - we are looking at different options," Agag told Autosport.
"London would be of course a really strong option, but we are open to Birmingham, Manchester - other cities in the UK.
"We are going to be working with [Motorsport UK] to see if we can make that can happen and we have a little plan that we've agreed, David Richards and I, steps to see if we can do it.
"It is not easy, but we are working together for it.
"First [we have] to find the right space; we have people in London and other places looking.
"In London we are combing the city, looking at every single street, [in] every single corner, we want to analyse the possibility of a race.
"When we have that feasibility of the different areas, then we will take the next step but the first is to identify the places where we can host the race in London."
Agag said FE is evaluating other possible UK race locations "at the same time" as it assesses the viability of a London race.
FE last raced in the UK at the end of its second season in 2015/16, when Nico Prost won both London E-Prix races in Battersea Park.
The series agreed not to return to the track after that event, despite having an agreement in place for further races, in the face of opposition from local residents.
Agag added he has "no idea" if the outcome of the UK's current Brexit negotiations could threaten FE returning to the country.
"[That's] because we have no idea what the outcome of Brexit will be," he said.
"It could jeopardise, it could help, it could be neutral - anything could happen now, we are in a complete unknown.
"We hope the deal with the European Union happens, I think that would be good for everybody."
An Auckland-based consortium recently launched a bid to bring FE to New Zealand and Agag confirmed that the series was speaking to the organisation as well as "Russia, Brazil - and Korea is going to happen".
If FE were to return to Russia for the first time since the sole Moscow E-Prix, which took place in 2015, the race would take place in St Petersburg.
Discussions about the event are taking place with the promoter of the Russian Grand Prix.
"[St Petersburg] is their preference," said Agag.
"So, we're talking to the promoter of Formula 1 in Sochi and they would like to be the promoter with us in Saint Petersburg and we would really like that."