I'm not sure show when I'm going (sometime between now and April is my best guess) or returning or how long I will be there.
Hello simoncdl,
Based on the information given above it is impossible to answer whether or not you would be liable for UK tax on your return to the UK.
Residency is a complex area. Your personal circumstances would need to be looked at in much more detail as ties such as home, work, family etc. in the UK, the number of days you visit the UK, may class you as UK resident for tax purposes regardless of where you reside.
If classed as UK resident you would then be taxed on your worldwide income so it is very important that your individual circumstances are dealt with correctly to protect your residency status and exposure to UK taxation.
Happy to help if required so if you need any further assistance please do not hesitate to contact me.