Christ Church College Oxford

I was highly disappointed on my last visit to Oxford to find out that the Cathedral at Christ Church College was closed to the public that day! You can just see the Cathedral behind other college buildings. It costs 6 GBP to see the College (including the Cathedral) but my friends here tell me that members of the parish of St Peter and St Paul in Buckingham can be admitted to the Cathedral without charge as we are members of the Diocese of Oxford.