Tinie Tempah has announced his UK tour, which was due to start next month, will be rescheduled to March and April in 2014.
Due to issues with rehearsal schedules, the rapper and his team feel they haven't had enough time to put together a show that "fans have come to expect".
Shows in Aberdeen, Glasgow, Leeds and Newcastle have been cancelled.
Tinie said: "Apologies to everyone who was looking forward to it, April will be amazing, I promise."
He added: "Myself and management have decided to postpone it until April so I have enough time to rehearse all the new songs and make this tour even better than the last one."
The Birmingham LG Arena show has been replaced by two nights at Wolverhampton's Civic Hall, while the show at Manchester Arena will be over two nights at the O2 Apollo in Manchester.
A new date has also been added in Brighton (31 March).
The rapper, who recently headlined Radio 1's Teen Awards, released his second album, Demonstration, on 4 November and is currently number three in the Official UK chart.
A statement from Live Nation says tickets remain valid, and that ticket holders for the Birmingham and Manchester dates will be contacted by their ticket seller to arrange tickets for new dates and venue.
Tickets for the Brighton show go on sale Friday 15th November at 9am.
Tinie Tempah's rescheduled tour dates are as follows:
Civic Hall, Wolverhampton (Moved from 16 Dec - Birmingham LG Arena) - 25 March, 2014
Civic Hall, Wolverhampton (Moved from 16 Dec - Birmingham LG Arena) - 26
02 Apollo, Manchester (Moved from 05 Dec 2013 - Manchester Arena) - 28
02 Apollo, Manchester (Moved from 05 Dec 2013 - Manchester Arena) - 29
London 02 Arena (Moved from 18 Dec 2013) - 30
Brighton Centre, Brighton (New show) - 31
Captial FM Arena, Nottingham (Moved from 08 Dec 2013) - 2 April, 2014
Motorpoint Arena, Cardiff (Moved from 13 Dec 2013) - 4
BIC, Bournemouth (Moved From 15 Dec 2013) - 6
Echo Arena, Liverpool (Moved from 12 Dec 2013) - 7
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