Operating currently, very few details (no dates) available.
Updated 7th January 2005
Operated from 1982 to 1984, using cancellations only.
Updated 28th July 2005
Operated from 1983 onwards, using cancellations only.
Updated 24th August 2005
Operated in 1988, using a cancellation only.
Updated 16th November 2003
Operated in 1983, using a cancellation only.
Updated 31st August 2005
Operated from 1992, perhaps earlier, using a cancellation only.
Updated 10th February 2007
Operated in 1996, possibly later, using cancellations only.
Updated 24th August 2005
Operated from 1981 onwards, using cancellations only.
Updated 22nd August 2005
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