I promised to say what happened about my letter to St Thoms querying my change of appointment from tomorrow (27th March) to a date in November.
It seems the letter was lost in the post but a phone call to them today has led to an explanation, an apology and a new appointment.
It seems that occasionally we may be given an appointment that might be listed before members of the team have sorted all the dates for holidays, courses etc. If something later comes up that means one of the team is no longer available, appointments have to be canceled.The procedure is then to allocate the next available appointment - which may be a considerably long time ahead.
If you do fall foul of a cancellation and then get a distant re-arranged appointment it may be worth giving them a ring from time to time to see about cancellations. I have now got one such cancellation for a date in May so don't have to wait until November.