I don't know what you lot normally eat but there are no good Fish & Chip Shops in Windermere or Bowness.
Being local I will attempt to give an unbiased view of the places I have eaten in over the past year.
Trattoria - Crap food and ingredients.
Lamplighters - Best battered fried fish in the area (Chips frozen catering type insipid & dry) Large menu
not changed in 20 years- good cooked food.
Francines trys hard, good if you like your food swimming in sauces.
Jericho's - 1st class cooking & ingredients.
Indians Restaurants- Prince of India & Emperor of India
All food tastes the same from basic sauces -Kendal Indian restaurants better.
Chinese Restaurants - All clones of each other not cheap anymore (Example -Starter- Salt & Pepper Spare Ribs £7.50) Now deep fried for conveniance.
Roberto's Upped his game, excellent food & ingrediants.
Hyltons (Formally Gibby's) Name changed but same crap food.
Sol Bar (Spanish?) Tapas! Crappas! All food catering packs. Listen for the Microwave PING! and your food follows 5 seconds later. This place same owners as Gibbys, The Ship Inn, & Wheelhouse - portion control
minimum on plate- maximum in bank!
Villa Positano - Good quality Meat & Fish dishes and as usual Italians can't cook veg for toffee.