Another thing has occurred to me as a result of the Sandystorm, with the TSR2 being the only thing for the RAF to focus on until the P1154 came along in December 1961 it was 'vultured' by officials with nothing else to do but interfere with this project. This interference extended all the way down to the layout of cockpit switches and had a negative effect on the programme overall.
Without the immediate cancelling of the F155T, SR P177 and other things these officials will have a normal spread of projects to occupy their attention and thus won't interfere with the TSR2 as much and this should reduce costs and delays a bit.
Perhaps a Sandystorm should have been even more drastic, perhaps with elimination of RAF as both manned strategic bombing and air defence of UK were becoming obsolete? Turn over the remains to the Army (RAFG, Transport Command...) and FAA (Coastal Command...). Make aircraft industry focus on naval aircraft, transports (which also have civil applications) and missiles. Naval aircraft would suffice for tactical strikes, expeditionary duties and air policing duties over UK.
Now, with RAF clearly under a fundamental threat to their ethos of manned flying aircraft they turned to sabotaging RN during 1960's. Or perhaps this was Treasury plan all along, make the services eat each other out?