Concerns an appeal from a decision of the leasehold valuation tribunal for the London Rent Assessment Panel under the Landlord and Tenant Act 1985 s27A to determine whether or not the appellants were liable to pay service charges for 2004 of £4 436 63. The respondent is a housing co-operative and the appellants, as assured tenants, had each exercised the right to buy their flats under the Housing Act 1985 Part V. They both submitted notice that they wished to buy and were served notice by the respondent with details of estimated value. They contested the value given and submitted and received notice a second time at a later date. They contended in their applications to the LVT that they were not liable to pay the service charges in question because, they said, these related to costs incurred before their leases were granted. "Held": the judge made an assessment of the relevant costs payable by the appellants based on information about various reference periods and the dates of submission of notice given by the respondent under the Housing Act 1985 S125.