Unfortunately it is likely that you will be liable for capital gains tax as the rules regarding capital gains tax for UK Non-residents changed significantly with effect from the 2015/16 tax year in that a UK Non-resident owner who makes a disposal of a UK residential property is now required to file a Non Resident Capital Gains Tax Return (NRCGT) to HMRC within 30 days of completion of the disposal.
The NRCGT return is in addition to your self assessment tax return which must also still be filed by the required deadline.
Computations must be provided along with details of any exemptions or reliefs being claimed and any elections to use one of the alternative methods of calculating the post 06 April 2015 element of the gain.
If the disposal is not reported within 30 days a penalty might be issued and deferment of any payment of capital gains tax due until the self assessment deadline may not be granted and may become immediately payable.
The new capital gains rules and necessary computations are complex and as the deadline to submit the NRCGT return is very tight, only being 30 days from disposal, careful planning is of great importance.
I am assuming you are aware of the above.
Happy to help, so if you need any further assistance please do not hesitate to contact me.
Sizer & Co Accountants
Birmingham - London - Manchester - Leeds