JOHN Taylor reveals a disappointing attitude to the proposed enlarged Focus store in Plymouth Road industrial Estate (Times June 9). He reasons that industrial and not retail businesses should be encouraged, thereby avoiding Tavistock becoming a dormitory town. It contradicts his opinion that the Tavistock to Plymouth railway service should be reinstated. Its main users would be commuters travelling to and from their dormitory town. His argument is also counter to the trend of developing light industry at town perimeters and away from town centres. This was first noticed in the 1930s with ?ribbon development? and took a new and government-directed slant in the introduction, post-1945 of industrial estates such as Pitts Cleave. Tavistock?s strength is as a market town, not an industrial town. Commuters are customers whose shopping encourages the market potential of the town whereas central industrial activity discourages it. Hopefully the planning authority will reject John?s retrograde 19th century view of urban prosperity and authorise the enlarged retail outlet. G Kirkpatrick Parkwood Road Tavistock