Pompey Academy suffered defeat in their first FL Alliance SW fixture of 2016.
Playing against the wind, the Blues’ found themselves 4 down after 20 minutes against the young Robins.
A cracking 20 yard Kaleem Haitham shot into the top right corner gave Pompey hope of a comeback but Swindon added a fifth just before the break.
Liam Sayers pulled another back with a neat finish in the second half before Obi Mikel’s header from a corner was disallowed for offside.
Swindon Town grabbed another to cap the Blues’ misery as the match fizzled out.
Post-match, Mikey Harris told Steve Wilson:
‘I think we still thought it was Christmas and we decided to give them four nice wrapped-up presents with a bow on top.
‘We didn’t start the game well at all. We were playing against a strong wind and the lads were very tentative.
‘They were probably a bit more worried about the wind than they should have been.
‘But credit to Swindon – they put us under a lot of pressure.
‘It’s a bad defeat but it’s a great learning curve for them. I think they will take a lot from that.
In life, you generally learn a lot more from your failures than your successes.’
Photos from Pompey Academy v Swindon Town on Saturday 9th January 2016: