One warning. My late aunt wanted some blinds for their conservatory. She phoned up one of the well advertised national chains from an ad in the Sunday paper. Can't quite
remember who but you can likely envisage the sort of thing. Anyhow someone came round to measure and quote and she couldn't get rid of them - they were so pushy for a sale and wouldn't leave to the extent she was on the point of calling the police. For context, though she was by then elderly she was very capable, and perfectly able to be forceful; she'd been a JP for a while, but was still quite upset by the whole episode.