Christian Horner is expected to make his Formula 1 comeback at this weekend’s British Grand Prix.Horner was relieved of his duties as Red Bull team principal 48 hours after last year’s event at Silverstone.The 52-year-old has not been in an F1 paddock since. However, the Press Association understands Horner is planning to attend his home race as he continues to plot his return to the grid.Horner said he has "unfinished business" in a sport where he oversaw eight world drivers’ championships and six constructors’ titles at Red Bull.He has been linked with Alpine, Aston Martin and also Chinese car manufacturer BYD to lead a possible 12th team on the grid.Alpine confirmed earlier this year that Horner was among a group of investors interested in acquiring Otro Capital’s 24 per cent shareholding in the Enstone team. Renault Group owns the other 76 per cent in Alpine.Christian Horner, who is expected to make his Formula One comeback at this weekend's British Grand Prix. (PA)However, Renault Group CEO Francois Provost told the Press Association in Monaco last month that there are "no discussions" with Horner.Speaking to the Press Association in March, Mercedes boss Toto Wolff also claimed his rival’s return could be hindered by the "repercussions" of "having broken a lot of glass" across his two decades in F1.The 52-year-old British executive was dismissed as Red Bull team principal after last year’s British Grand Prix, with his official exit confirmed in September.During his 20-year tenure, Horner oversaw a period of immense success, securing eight drivers’ and six constructors’ titles. His sacking came a year and a half after allegations of "inappropriate behaviour" by a female colleague, claims he consistently denied and was twice exonerated from by an independent KC.Speaking earlier this year at the European Motor Show in Dublin, Horner broke his silence, stating: "I feel like I have unfinished business in Formula One. It didn’t finish the way that I would have liked it to finish. But I am not going to come back for just anything. I am only going to come back for something that can win."He elaborated on his conditions for a comeback, emphasising a desire for a significant role.Former Red Bull team principal Christian Horner is exploring a way back to Formula One (Bradley Collyer/PA)"I don’t want to go back in the paddock unless I have something to do. I miss the sport, I miss the people, I miss the team that I built. I had 21 incredible years in Formula One. I had a great run, won a lot of races, championships and worked with some amazing drivers, engineers and partners. I don’t need to go back. I could stop my career now.“So I would only go back for the right opportunity to work with great people, and to work in an environment where people want to win, and they shared that desire. I would want to be a partner, rather than just a hired hand, but we will see how it plays out. I am not in a rush. I don’t need to do anything."