Hi Keith,
The short answer is no - Methodists and Presbyterians are not the same. Presbyterianism began nearly two centuries before Wesley started what was to become known as the methodist church. The Presbyterians were aiming to bring the established church (ie the Church of England) closer to the Lutheran and Calvinistic forms with no bishops, archdeacons etc. But they wished to remain within the established church. They still wished to worship in church. Methodists began forming themselves into socieites and meeting in members' houses, later building supplementary preaching houses. Broadly speaking, the protestants of both Scotland and Northern Ireland are members of the Presbyterian church, although you do find the Episcopalians (Anglicans) as well in Scotland.
There is much more to it than this and maybe a google search will find you more detailed explanations.
Hope that helps.
Nell