This update is intended to be appended to the petition, posting this at 15/08/2019, at the level of 154 signatures, which may be discounted on this particular clause. Anyone who signs this petition past 154 signatures, also agrees with the below.
Not only EU expatriates we denied vote in the referendum, but also some UK expatriates under 15 years abroad we denied access to the most democratic instrument.
For over 15 years UK expatriates there has been ruling of the high court published at https://www.judiciary.uk/wp-content/uploads/2016/04/shindler-final.pdf. Unfortunately not in favour of the claim, however, the ruling should be also challenged at the EU level as the length is not synchronised at the EU level, where some countries have no restriction on time abroad, and some have 25 years, Germany for example.