Thanks for your question _ I am one of the Uk tax experts here on Just Answer.
You will be liable to capital gains tax on your share of the profits from the sale of the property (assuming it was already in your name along with your siblings when the sale took place) but not on the cash gift from your mother (as gifts are not liable to tax)
You must declare the sale of this property to HMRC and will need to complete a self assessment tax return after 05/04/2017 to do this (assuming the sale took place after 06/04/2016) and any tax you owe will be due no later than 31/01/2018 (HMRC will notify you of how much this is)
Let me know if I can assist furtehr or if you need me to expand on any of the answer provided, or if the circumstances are different from those I have provided an answer for
Yes it does - it becomes tax consideration in the UK due to you being here in the UK and most importantly the fact you wish to being the money into the UK
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