A postcode checker that answers before you ask
The problem
A builder who covers London and the Home Counties gets a steady stream of enquiries from just outside that area. Each one costs a phone call and a polite no. SKL wanted visitors to know straight away whether they were in range.
What we built
A small, hand-built postcode checker on the site. Type a postcode, get an instant answer: yes, probably, or sorry. It uses the public postcode lookup for the area, then matches the county against SKL’s own coverage lists.
Small, private and instant
It is plain JavaScript with no framework and no data leaving the page beyond the postcode itself. The coverage lists are a few lines SKL can change in minutes. It is a favourite little touch on the site, and exactly the kind of feature we like to add to an existing site rather than rebuild the whole thing.