RE: well done..25 Mar 2019 19:58
Once formally announced, bidders are committed
The announcement of a firm intention to make an offer (commonly referred to as a "Rule 2.7 announcement") is a significant event and will commit the bidder to proceed with the offer and to post its offer documentation within 28 days.
The City Code provides that such an announcement should only be made when the bidder has every reason to believe that it can and will continue to be able to implement the offer. In some situations, a "possible offer" announcement may need to be made prior to an announcement of a firm intention to make an announcement – for instance, in response to market rumour or speculation. Where possible offer announcements are made, they are usually very brief.
Requirement for a mandatory offer: Where a bidder is interested in shares carrying 30% or more of the target’s voting share rights, the bidder must make a mandatory offer in cash at no less than the highest price paid during the preceding 12 months (often referred to as a "Rule 9 offer"). Mandatory offers can only be conditional on the bidder receiving acceptances that, together with any shares already held or acquired during the offer, would give the bidder and its concert parties more than 50% of the voting rights. As such, bidders cannot rely on other conditions to protect themselves.
https://www.burges-salmon.com/news-and-insight/publications/guide-to-public-takeovers-in-the-uk/#public-takeover-private-sales