How do you report foreign income/loss when tax years differ

I have foreign income on a property in Ireland but the tax year differs to the UK - Jan to Jan rather than April to April. The tax return for the period Jan - April has not yet been made. How do you report when the tax years differ? And what do you report if there is a loss?

Hi mcmd,
To keep it simple, use the figures for the year for Ireland to put in the UK one.
Thank you.