Fly emergence unlikely
Fly emergence possible soon
Fly emergence due soon
Flies emerging
Reporting suspected or confirmed cases helps us validate this new emergence forecast. The best way to check how accurate the model is across the UK is to receive reports of real field cases. If you see eggs or maggots on sheep, please submit a report using the external link below.
Only the postcode is requested — this is not used to locate strike cases, but purely to help validate and improve the forecast for future years.
Blowfly Strike Tracker & Reporting System in the UK
This Blowfly Reporting Site is supported and provided by Elanco.
Historic data is provided here, for the 2026 blowfly season, so you can see how risk was forecast in your area in that year. However, the risk is different every year so just because the 'dot changed colour' on a certain date in previous years does not mean it will do so in other years.
| Location |
30th Mar 2026
|
6th Apr 2026
|
13th Apr 2026
|
20th Apr 2026
|
|---|---|---|---|---|
| Aberdaron | ||||
| Aberdeen Airport | ||||
| Aberporth | ||||
| Aboyne | ||||
| Albemarle | ||||
| Altnaharra Saws | ||||
| Andrewsfield | ||||
| Aonach Mor Summit | ||||
| Aultbea | ||||
| Aviemore | ||||
| Ballypatrick Forest | ||||
| Baltasound | ||||
| Bealach Na Ba | ||||
| Bedford | ||||
| Belfast International Airport | ||||
| Belmullet | ||||
| Benson | ||||
| Bingley Samos | ||||
| Boscombe Down | ||||
| Boulmer | ||||
| Bournemouth Airport | ||||
| Bridlington Mrsc | ||||
| Brize Norton | ||||
| Cairn Gorm Summit | ||||
| Cairnwell | ||||
| Camborne | ||||
| Campbeltown Airport | ||||
| Capel Curig | ||||
| Cardinham | ||||
| Carlisle | ||||
| Castlederg | ||||
| Charlwood | ||||
| Charterhall | ||||
| Chivenor | ||||
| Church Lawford | ||||
| Coleshill | ||||
| Coningsby | ||||
| Cranwell | ||||
| Credenhill | ||||
| Crosby | ||||
| Culdrose | ||||
| Dishforth Airfield | ||||
| Donna Nook | ||||
| Drumalbin | ||||
| Dundrennan | ||||
| Dunkeswell Aerodrome | ||||
| Edinburgh/Gogarbank | ||||
| Eskdalemuir | ||||
| Exeter Airport | ||||
| Fair Isle | ||||
| Farnborough | ||||
| Foula | ||||
| Fylingdales | ||||
| Glasgow/Bishopton | ||||
| Glen Ogle | ||||
| Glenanne | ||||
| Gravesend-Broadness | ||||
| Great Dun Fell 2 | ||||
| Guernsey | ||||
| Hawarden | ||||
| Heathrow | ||||
| Herstmonceux West End | ||||
| Holbeach | ||||
| Inverbervie | ||||
| Islay Airport | ||||
| Isle Of Portland | ||||
| Jersey | ||||
| Kenley | ||||
| Keswick | ||||
| Kinloss | ||||
| Kirkwall Airport | ||||
| Lake Vyrnwy Saws | ||||
| Langdon Bay | ||||
| Larkhill | ||||
| Leconfield Sar | ||||
| Leeming | ||||
| Lerwick | ||||
| Leuchars | ||||
| Linton On Ouse | ||||
| Liscombe | ||||
| Little Rissington | ||||
| Loch Glascarnoch | ||||
| Loch Rannoch | ||||
| Loftus | ||||
| Lossiemouth | ||||
| Lough Fea | ||||
| Lyneham | ||||
| Magilligan | ||||
| Malin Head | ||||
| Manston | ||||
| Marham | ||||
| Middle Wallop | ||||
| Milford Haven C.B. | ||||
| Mount Batten | ||||
| Mumbles Head | ||||
| North Wyke | ||||
| Northolt | ||||
| Odiham | ||||
| Pembrey Sands | ||||
| Prestwick Rnas | ||||
| Raf High Wycombe | ||||
| Redesdale Camp | ||||
| Rhyl | ||||
| Roches Point | ||||
| Ronaldsway | ||||
| Rostherne No 2 | ||||
| Rothamsted | ||||
| Scampton | ||||
| Scarborough | ||||
| Scilly St Marys | ||||
| Sennybridge | ||||
| Shap | ||||
| Shawbury | ||||
| Shobdon Saws | ||||
| Shoeburyness | ||||
| Shoreham | ||||
| Skye/Lusa | ||||
| South Uist Range | ||||
| Spadeadam | ||||
| St Catherines Pt. | ||||
| St-Athan | ||||
| St. Bees Head | ||||
| Stonyhurst | ||||
| Stornoway Airport | ||||
| Strathallan | ||||
| Thornecliffe Leek | ||||
| Thorney Island | ||||
| Throckmorton | ||||
| Tiree | ||||
| Topcliffe | ||||
| Trawsgoed | ||||
| Tulloch Bridge | ||||
| Valentia Observatory | ||||
| Valley | ||||
| Waddington | ||||
| Wainfleet | ||||
| Walney Island | ||||
| Warcop | ||||
| Watnall | ||||
| Wattisham | ||||
| West Freugh | ||||
| Weybourne | ||||
| Wick John O Groats Airport | ||||
| Wittering | ||||
| Woburn | ||||
| Yeovilton |
