{"t":{"slug":"irthlingborough","name":"Irthlingborough","district_slug":"north-northamptonshire","district":"North Northamptonshire","region":"East Midlands","branches":3,"estate":3,"letting":2},"ranked":[{"branch_id":"bywater-herring-ltd-north-northamptonshire","channel":"sales","score":82.0,"coverage":25,"perf":null,"rep":null,"pres":100.0,"trust":55.0,"pres_raw":2.0,"pres_src":"agent website","rank_town":1,"n_town":1,"rank_outcode":1,"n_outcode":1,"rank_district":1,"n_district":12,"rank_region":16,"n_region":381,"rank_brand":1,"n_brand":1,"updated":"2026-10-17","name":"Bywater Herring Ltd","id":"bywater-herring-ltd-north-northamptonshire","address":"42 High Street, Irthlingborough, NN9 5TN","postcode":"NN9 5TN","outcode":"NN9","kind":"Estate and letting agent","grp":null,"town":"Irthlingborough","town_slug":"irthlingborough","district":"North Northamptonshire","since":null,"founded":"2018-02-13","sales_count":2,"lettings_count":2,"domain":"bywaterherring.co.uk","reviews":[],"year":2018,"provisional":true,"reason":"Strongest on market presence: 2 homes for sale (agent website), trading since 2018."}],"unranked":[{"id":"open-house-kettering-limited-north-northamptonshire","name":"Open House Kettering Limited","address":"22a High Street, Irthlingborough, NN9 5TN","kind":"Estate agent"},{"id":"richard-james-estate-agents-irthlingborough-ltd-north-northa","name":"Richard James Estate Agents (Irthlingborough) Ltd","address":"28 High Street, Irthlingborough, NN9 5TN","kind":"Estate and letting agent"}],"stock":2.0,"sold_n":416,"median":244000,"ocs":["NN9"],"rivals":[],"nearby":[{"slug":"kettering","name":"Kettering"},{"slug":"wellingborough","name":"Wellingborough"},{"slug":"rushden","name":"Rushden"},{"slug":"thrapston","name":"Thrapston"},{"slug":"corby","name":"Corby"},{"slug":"peterborough-north-northamptonshire","name":"Peterborough"},{"slug":"north-northamptonshire","name":"North Northamptonshire"},{"slug":"rothwell","name":"Rothwell"},{"slug":"oundle","name":"Oundle"}],"faq":[["Who is the best estate agent in Irthlingborough?","On the UK Agent Register score, Bywater Herring Ltd ranks first of 1 estate agent offices in Irthlingborough (October 2026). Strongest on market presence: 2 homes for sale (agent website), trading since 2018."],["How many estate agents are there in Irthlingborough?","3 estate and letting agent offices are on the register in Irthlingborough: 3 handle sales and 2 handle lettings."],["Which Irthlingborough agent has the most homes for sale?","Bywater Herring Ltd, with 2 (agent website)."],["What do homes sell for in Irthlingborough?","A median £244,000 across 416 sales in its postcode districts (NN9) in the last 12 months (HM Land Registry)."],["How are agents ranked?","Four measures, weighted 40/35/15/10: sales performance, reviews, market presence and trust. Missing measures are left out and the rest rescaled; rankings below 75% data coverage are marked provisional. Full method at /methodology."]],"channel":"sales","month":"October 2026","updated":"2026-10-17"}