Copy of United kingdom Version of Blade on the Feather

I am interested in getting a copy of the United Kingdom version of Blade on the Feather starring Denholm Elliott, Donald Pleasance and Tom Conti.

My father owned the property where this film was made and we were promised a copy of the production when LWT released it.

We unfortuneatly did not therefore record the film when it appeared on TV and the promised copy was not forthcoming.

I should be very grateful if there is anyone in the UK who could help me with this.

Thank you.