I went in today and it looks pretty good - a limited stock but what they've got seemed spot on and I suspect will be far more helpful and knowledgeable than Homebase or some garden centre staff! They have only been open since Easter so are still settling in and stocking up, but definitely worth visiting.
The only problem of course is parking, which is pretty limited around there. That said, we went for compost and manure and found a spot both times... so give it a go.
Apparently there is a piece about the shop in the local paper today but couldn't find it. If anyone does, can you link it here?