Sadiq Khan is offering jobs paying up to almost £100,000 a year for staff able to help him seize control of Oxford Street.The first four of about 15 jobs are being advertised on a Greater London Authority website – and the job specifications contain revelations about the mayor’s potential “power grab” from Westminster council.These include redesignating Oxford Street as a Transport for London road – rather than keeping it as a Westminster council road – and having “longer-term stewardship of the Oxford Street area”.As expected, this would involve securing Parliamentary approval for the establishment of a “mayoral development corporation” to drive through the expected ban on vehicles and cyclists, and the diversion of numerous bus routes.