What costs can we claim back?

https://www.gov.uk/guidance/compulsory-purchase-and-compensation-guide-4-compensation-to-residential-owners-and-occupiers

Comprehensive records

10. It is important that you keep a comprehensive record of all communications with the acquiring authority, including notes of any meetings. You should also keep detailed records of all expenses incurred and losses sustained as you may be able to recover these as part of your claim for compensation. You should bear in mind that you can only receive compensation for expenses and losses which occur as a direct and reasonable consequence of the acquisition of your land. You may also wish to keep a record of the condition and state of your land.

58. Although not an exhaustive list, typical items which can be claimed depending on your circumstances are set out below:

• removal expenses;
• legal fees arising from the acquisition of a replacement property
• stamp duty arising from the acquisition of a replacement property
• survey fees and costs in connection with the acquisition of a replacement property
• special adaptations to your replacement property
• altering soft furnishings and moveable fittings and fixtures to fit your new home
• disconnection and reconnection of services telephone, electricity, etc
• forwarding of post (for a reasonable period)
• incidental costs of acquiring replacement property
• if a tenant is displaced from rented accommodation as a result of a compulsory purchase the acquiring authority may agree to pay the reasonable expenses incurred (other than the price of the property) of buying a reasonably comparable dwelling, provided it is bought within a year of the displacement