[Review] M&S Marks and Spencers Portuguese Custard Tart

After trying Portuguese Tarts from Lidl and Morrisions, I just had to try Portuguese Tart from M&S to compare. 
Visually, it appealed to me because the surface of the custard filling was that brown and the pastry was white.
The filling was delicious but I think it is just the same filling used in their M&S Vanilla slices.
Overall the best filling compared to Lidl and Morrison but the pastry lacked layers as it was too buttery and oily.