Britain's biggest nightclub operator has turned up the volume in its bid to merge with rival Revolution Bars after it outlined its plans to create a bar giant with annual sales of more than £270 million.
Deltic is proposing an all-paper merger that would see embattled Revolution own 65% of the combined business and Deltic the remaining 35%.
The proposed tie-up sees Deltic go head-to-head with Slug And Lettuce owner Stonegate, which struck an agreement in August to acquire Revolution Bars in a £101.5 million deal.
Revolution, which owns more than 60 Revolution and Revolucion de Cuba high street bars, has already rebuffed an approach from Deltic over "significant concerns regarding both value and deliverability".
But Deltic - whose estate spans 57 nightclubs - said it was "disappointed" by Revolution's "instant dismissal" of the proposal and wanted to take the merger plan straight to shareholders.
It said: "Deltic has determined that the merger proposal... is best shared directly with Revolution shareholders as it is they who ultimately need to determine the future of Revolution rather than its directors."
The group has now given Revolution access to its books.
"Deltic believes the merger proposal represents a compelling value creation opportunity for Revolution and its shareholders and would welcome the opportunity to engage with the board of Revolution on a constructive basis," it added.
Deltic still has to put forward a firm offer or walk away by 5pm on October 10 under City takeover rules.
The latest twist in the takeover saga comes after Revolution revealed earlier this week that annual profits fell by 29% to £3.6 million and cautioned over cooling Autumn sales.
The Ashton-under-Lyne-based firm said like-for-like sales rose by 1.5% in the year, but added that trading since its year-end has been hit by a "disappointing" September, with first-quarter sales growth easing back to 0.3%.
Its bottom line has been knocked by a sector-wide surge in costs, including the impact of the living wage and the new apprenticeship levy, as well as an above-inflation increase in business rates.
Revolution issued a profit warning in May, which sent shares tumbling and sparked off takeover interest in the group, with Stonegate first out of the stalls with a bid of 203p a share.
Stonegate is the fourth largest managed pub company in the UK by sites.
Deltic's estate includes those operating under the PRYZM, Bar And Beyond, Steinbeck And Shaw, Atik, and Fiction brands.