Minidish
The Minidish is the tradename used for the small-sized satellite dish used by Freesat and Sky. The term has entered the vocabulary in the UK and Ireland as a generic term for a satellite dish, particularly small ones.

The Minidish is an oval, mesh satellite dish capable of reflecting signals broadcast in the upper X band and . Two sizes exist:
"Zone 1" dishes are issued in southern and Northern  England and parts of Scotland and were 43 cm vertically prior to 2009; newer mark 4 dishes are approximately 50 cm
"Zone 2" dishes are issued in elsewhere (Wales, Northern Ireland, Republic of Ireland, Scotland and northern England), which are 57 cm vertically.

The Minidish uses a non-standard connector for the LNB, consisting of a peg about  in width and  in height prior to the mark 4 dishes introduced in 2009, as opposed to the 40 mm collar. This enforces the use of Sky-approved equipment, but also ensures that a suitable LNB is used. Due to the shape of the dish, an LNB with an oval feedhorn is required to get full signal.

References

Satellite television
Radio electronics
Sky Group
Brands that became generic