I would assume that the compulsory strike-off was started because of the missing confirmation statement and information was not given to Companies House.
Someone has objected to the dissolving of the company, it could have been anyone from Declan himself, his legal counsel, the police, someone who has money with Declan, or another third party - no way of really knowing at this point.
It's just Companies House thinking that the company is no longer required because the Confirmation Statement (literally just a report confirming the information of the company such as directors, registered office, shareholders, etc.) has not been filed. The objection is from an interested party as you generally have to give good cause as to the objection (i.e. to stop people being divs and objecting to any striking off of a company just to be a nuisance). Good cause can be evidence of a debt but it's more than likely that it'd have been someone associated with the investigation.