Morning missb.
Redundancy is a difficult area but as I understand it, it is always the role within the organisation which is being made redundant, not the individual. This means he's saying that he no longer needs an office manager. Reorganisation would suggest that he can share out the tasks you undertake amongst other people - he can't advertise your job again once you've been made redundant.
He can't make you redundant because you are pregnant, have you told him yet?
Speak to ACAS, they are free and impartial and they have a helpline facility on
http://www.acas.org.u...x.aspx?articleid=1410