For the first six years, TWW's service was provided from a single VHF transmitter serving both south east Wales and the west of England.

The later acquisition of Teledu Cymru in 1964 allowing TWW to extend its coverage across most of Wales and to provide separate services for the Welsh and English parts of the resulting 'dual region' franchise.

This caused the Independent Television Authority to organise an emergency transitional service run by Harlech but using TWW's staff, leftover programming, and some assets.

The main opening programme came at 7:00 pm with The Stars Rise in the West, a filmed special introduced by It's That Man Again regular Jack Train.

No reason was given for the dismissal (as is common practice for franchise changes) but it was believed that TWW's decision to keep its corporate headquarters in London and not move them to within the region was a significant factor.

A darker explanation proffered at the time was that it was "government revenge" against the broadcaster's major shareholder the News of the World newspaper, which had printed a series of critical articles about the then Prime Minister Harold Wilson.

Ironically recorded at the Granville Theatre in London, Betjeman closed the epilogue and the station with these words: The new firm, Harlech, which will be centred in Cardiff, must build up its own personality.

As Betjeman walked out of the theatre and the credits rolled, the camera tilted up to the "EXIT" sign on the wall, and TWW ended its transmission for the last time.

TWW operated from two sites – a converted farm at Pontcanna, near Cardiff (now demolished and replaced by a housing estate) and similar facilities at Bath Road in Bristol.

Although TWW inherited Teledu Cymru's studios in Western Avenue, Cardiff it was decided to sell these and base both operations at Pontcanna.

Although the bulk of test transmissions and research were conducted for the Independent Television Authority (ITA) at the ABC studios at Teddington, TWW leased two prototype EMI colour cameras and associated equipment in 1966 and began running trials, with shows being transmitted on internal networks for viewing by employees.

[11] This was the first significant step in providing two distinct and separate programme services for Wales and for West and effectively established TWW's area as a 'dual region' during the last few years of their tenure.