{"unit_type": "constituency", "unit": "Birkenhead", "slug": "birkenhead", "latest_week": "2026-09-07", "latest": {"week": "2026-09-07", "incorporated": 13, "expected_trade": 6.3, "expected_trade_own": 6.3, "verified_sites": 0, "food_premises": 0, "no_site": 10, "checked": 13, "at_agent": 0, "property": 7, "operating_own": 6, "agent_share": 0.0, "property_share": 0.538, "last_year_active": null, "last_year_on_register": null, "incomplete": false}, "baseline_52w_active": null, "series": [{"week": "2026-06-01", "incorporated": 14, "expected_trade": 5.7, "expected_trade_own": 5.7, "verified_sites": 0, "food_premises": 0, "no_site": 0, "checked": 0, "at_agent": 0, "property": 1, "operating_own": 13, "agent_share": 0.0, "property_share": 0.071, "last_year_active": null, "last_year_on_register": null, "incomplete": false}, {"week": "2026-06-08", "incorporated": 7, "expected_trade": 3.1, "expected_trade_own": 3.1, "verified_sites": 0, "food_premises": 0, "no_site": 0, "checked": 0, "at_agent": 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0.077, "prev_share": 0.071}, {"sector": "Manufacturing", "n": 1, "share": 0.077, "prev_share": 0.052}, {"sector": "Professional services", "n": 1, "share": 0.077, "prev_share": 0.156}, {"sector": "IT & media", "n": 1, "share": 0.077, "prev_share": 0.052}, {"sector": "Finance & insurance", "n": 1, "share": 0.077, "prev_share": 0.019}, {"sector": "Business support", "n": 1, "share": 0.077, "prev_share": 0.038}], "rising": ["Property"], "sectors_4w": [{"sector": "Professional services", "n": 10, "share": 0.164}, {"sector": "Property", "n": 10, "share": 0.164}, {"sector": "Retail & wholesale", "n": 7, "share": 0.115}, {"sector": "Arts & leisure", "n": 6, "share": 0.098}, {"sector": "Hospitality & food", "n": 6, "share": 0.098}, {"sector": "Business support", "n": 5, "share": 0.082}, {"sector": "Manufacturing", "n": 3, "share": 0.049}, {"sector": "IT & media", "n": 3, "share": 0.049}], "bands": {"A": 5, "B": 5, "C": 2, "D": 0, "E": 1, "operating": 7, "scored": 13}, "companies": [], "examples": [], "survival": {"n": 1698, "survived": 48.3, "traded": 33.0, "n_all": 1698, "agent_share": 0.0, "name": "Birkenhead", "code": "E14001091", "nation": "England", "rank": 467, "of": 649, "region_figures": {"n": 134896, "survived": 49.2, "traded": 33.3, "n_all": 145277, "agent_share": 7.1}, "uk_figures": {"n": 1178421, "survived": 51.4, "traded": 35.1, "n_all": 1390138, "agent_share": 15.2}, "formed": ["2022-01", "2023-09"]}, "mp": {"name": "Alison McGovern", "party": "Labour", "member_id": 4083}, "fee_rise": {"code": "E14001091", "name": "Birkenhead", "pre_formed": 336.0, "post_formed": 295.0, "pre_per_month": 84.0, "post_per_month": 73.8, "change_pct": -12.2, "pre_dead18_pct": 37.2, "post_dead18_pct": 30.5, "pre_traded_pct": 35.4, "post_traded_pct": 45.1, "pre_formed_all_addresses": 336.0, "post_formed_all_addresses": 295.0, "enough": true}, "four_weeks": {"n": 61, "agent": 0, "own": 61, "trade": 27, "agent_share": 0.0, "start": "2026-08-17", "end": "2026-09-13", "weeks": 4}}