Evaluate the 'First-Past-the-Post' Electoral voting system

FPTP is an electoral system used most notably in the UK General Election and the Indian Parliamentary Elections. Under this system the party with the most votes in each constituency/region wins that seat (i.e. the party that is 'first past the post' in the 'race' to secure votes), whilst the runners-up gain nothing regardless of whether the margin of defeat was 1 vote or 1,000 votes. The key factors to consider when assessing the effectiveness of FPTP as an electoral system are: a) Representation, b) Simplicity c) Strength of Government.
PositivesCreates strong government - FPTP often creates governments with healthy majorities in parliament, allowing them to effectively legislate and push through the policies promised to the public in their winning manifestoSimple - FPTP is easy to understand, voters make on vote for one party and each constituency can only have one 'winner'. Less misunderstanding leads to less mistakes on ballot papers and therefore better representationPrevents extremist parties rising to power - Parties with extreme/damaging views often have minority support spread across the country but will likely not gain enough votes in any one constituency in order to win
NegativesNot Representative -- Unlike the the Additional Member system (used in Scotland), Alternative Vote System (Australia) and Single Transferrable Vote system (Northern Ireland), FPTP is not a system of proportional representation. % of votes is often disproportionate to the % of seats e.g. Green Party and UKIP got over 1 million votes between them in the 2017 UK General Election yet only secured one seat.Inherently favours certain parties - (UK) The historically dominant parties (Labour and Conservative) and parties with geographically concentrated support (SNP in Scotland) benefit from FPTP as they repeatedly win seats where their support base is traditionally strong. Conversely, smaller parties with support evenly distributed across the country tend to struggle under a FPTP system --> e.g. Lid Dems received over 1 million more votes than the SNP did, yet they won only around a third of the seats that the SNP did.