Caravan Sites and Control of Development Act 1960

6 (1) If within the period specified in a notice, or within such extended period as the local planning authority may allow, any steps required by the notice to be taken have not been taken, the local planning authority may enter the building and the land held with the building and take those steps, and may recover as a simple contract debt in any court of competent jurisdiction from the person who is then the owner of the land any expenses reasonably incurred by them in that behalf.

(2) Any expenses incurred by the owner or occupier of any building for the purpose of complying with a notice, and any sums paid by the owner of any building under the foregoing sub-paragraph in respect of expenses of the local planning authority in taking steps required to be taken by a notice, shall be deemed to be incurred or paid for the use and at the request of the person who carried out the works to which the notice relates.