In the promo, Andy Jordan is seen clashing with girlfriend Louise Thompson over allegations that she stripped in front of other men.
Meanwhile, Spencer Matthews sides with Thompson - his ex-girlfriend - over Lucy Watson - also his ex - and accuses the latter of sticking "her fingers in other people's business".
Matthews also recently romanced The Hills star Stephanie Pratt, who has been spotted shooting scenes for Made in Chelsea's latest run.
Another of his former love interests - Caggie Dunlop - is also rumoured to be returning to the BAFTA-winning reality show, having appeared as a regular in its first three series.
Made in Chelsea returns to E4 on Monday, October 14 at 10pm.
> Made in Chelsea stars sing in new musical series 6 trailer - video