Icelandic place names if they were in Britain

gistfile1.txt

Reykjavík - Reekswich
Þingvellir - Thingweald
Akureyri - Ackerearth
Mývatn - Midgewater
Skaftafell - Shaftfell
Ísafjörður - Icefirth
Vík í Mýrdal - Wick in Miredale
Jökulsárlón - Icemere Loch
Keflavík - Caeflwick
Heimaey - Hamey
Hella - Hull
Höfn í Hornafirði - Haven upon Hornfirth
Selfoss - Selfoss
Vestmannaeyjar - Westman Isles
Eyjafjallajökull - Islesfell Cap
Snæfellsjökull - Snowfell Cap
Stykkishólmur - Stockholm
Borgarnes - Boroughness
Grindavík - Grindswich
Seyðisfjörður - Seethingfirth
Ásbyrgi - Osbury
Dalvík - Dalewick
Svarfaðardalur - Swarfingdale
Eyjafjörður - Islesfirth
Hafnarfjörður - Havenfirth
Egilsstaðir - Eckelstead
Þórsmörk - Thorsmark
Langjökull - Long Cap
Húsavík - Housewich
Hveragerði - Coirgarth
Hvammstangi - Whamstongue
Kirkjubæjarklaustur - Kirkby Cloister
Djúpivogur - Deepwater
Grundarfjörður - Groundsfirth
Hvolsvöllur - Hillsweald
Reykholt - Reekhurst
Akranes - Acreness
Hólmavík - Holmswich
Sauðárkrókur - Shipbourne Crook
Blönduós - Blendsmouth
Flúðir - Leeds
Skagafjörður - Scagfirth
Ólafsvík - Wolfswick
Reykjahlíð - Reekslith
Varmahlíð - Warmslith
Grímsey - Grimsey
Mosfellsbær - Mosfellsby
Eyrarbakki - Earthsbeck
Hellissandur - Hullsand
Kópavogur - Whelpwater
Garðabær - Garthsby
Þönglabakki - Thongbeck