Spoke too soon have BBC1 & BBC2 but no ITV channels. Did contact Freeview info line which had recording of atmospheric problems in Wales, South West & South.
Cannot get all channels on TV. No ITV, Channel 4 or Channel 5, have tried with another aerial adaptor but no joy. I inherited my TV from my son about 5 years ago and has always been the same. Previous to Freeview I had Sky so have never had to sort this kind of problem before.