THE Antiques Roadshow programme filmed in Tavistock on May 11 is due to be broadcast this Sunday, October 2, at 6.45pm on BBC1. Filmed in the pannier market, local residents who took part on the day included the town clerk Roger Howard with his wife?s house gnomes and Prebendary John Rawlings with the church?s silver. Among the ?finds? were a plate, bought in the pannier market six years ago for £35 and now worth £1,000 and one of the most exciting clocks ever seen by one expert on the roadshow, dating from 1670 and worth £3-4,000.