Abstract: The invention relates to a method of transmitting a series of television programmes and a method of transmitting and receiving a television programme including interactive content, along with associated apparatus. In particular, there is provided a method of broadcasting a series of television programmes, the method comprising repeatedly broadcasting a subsequent group of programmes in the series instead of the previous group of programmes, wherein the subsequent group of programmes includes at least one programme later in the series than the programs in the previously broadcast group, and continuing in the same way in order to broadcast all of the programmes in the series. Consequently, television programmes of a series can be broadcast in groups. This method is particularly suited to broadcasting educational programmes as they provide flexibility in viewing times to encourage viewer participation.