The best way I have found to introduce a new mated Queen is to simply
hang the Queen cage in the middle of two frames for around 48 hours
and then to remove the tab so the worker bees can eat their way in to release the queen.
Check the Queen has been released from the cage a few days later.
by removing the cage from the hive but not by removing frames.

The most important thing is to stay away from the hive for at least 7 to 8 days after removing the tab so that the Queen can settle down into a laying routine.

Both mated and virgins Queens are posted to all parts of the UK via Royal Mail, you can select First Class or Special delivery.
First class post can take up to 3 days.
Special Delivery Is next day before 1pm.
Orders placed before 11:55 am will be posted the same day.
The Queens are posted In Introduction cages with around 7 attendant bees and queen candy.