Used to be known as a scallop in Lincoln; don't know whether it still is, as I haven't had one in decades!
While I'm here, a quick plug for two within walking distance of chez braconnier.
Oceans, my usual port of call:
Oceans fish & chip shop in Nottingham (restaurantguru.com)
and Apollo, which is actually nearer. Might pop in there later today:
APOLLO FISH BAR CARLTON, Nottingham - Restaurant Reviews & Phone Number - Tripadvisor
Two more in mid-Lincolnshire which are reliably good, Greyfriers in Stickney, which was coal-fired until three years ago. Some references place it in Norfolk, and it has a Peterborough postcode, just to confuse the issue still further. A regular lunch stop after the huge car boot on Saturdays.
Greyfriers Chip Shop - Stickney in Stickney - Restaurant reviews (restaurantguru.com)
Mermaid fisheries in Horncastle has a convenient memorial park just across the road for an alfresco lunch.
MERMAID FISHERIES, Horncastle - Restaurant Reviews, Photos & Phone Number - Tripadvisor