We do not have a comprehensive list of suppliers who will provide emergency cover so you will have to source a company who is advertising locally. You can do this by going online or looking through your local Yellow Pages for example.
You should ensure that they hold industry qualifications and have public indemnity insurance. Please ensure you have checked the following before instructing a contractor.
You will also be responsible for retaining a copy of the invoice (VAT where applicable) with full details of work carried out. Without this information, unfortunately it will not be possible to negotiate reimbursement from the landlord.