LONDON — The Mets at least received something more than a sightseeing tour or two for their four days across the pond.

If a ninth-inning comeback against Phillies closer Jose Alvarado wasn’t enough, there was the drama that followed. Drew Smith was thrust into a bottom-of-the-ninth jam and bent but didn’t break.

And then a highlight-reel double play allowed the Mets to escape with a 6-5 victory in front of 55,074 at London Stadium.

Nick Castellanos’ broken-bat squib with the bases loaded was grabbed barehanded by catcher Luis Torrens, who stepped on the plate, spun and fired off-balance to first, recording the final outs.

“The first thing I thought about was getting the out at home,” said Torrens, who got spiked on the left foot by sliding Garrett Stubbs on the play. “And then if we could get the out at first, this is what we wanted to do.”

Smith entered the cauldron after Reed Garrett had allowed two runners to reach base with one out in a game the Mets led 6-4.

Bryce Harper singled to load the bases before Alec Bohm walked to force in a run. Smith then got the broken-bat squib that became the game-ender.

“That is what you look for as a reliever,” Smith said. “I would have loved to come in and strike out Harper and strike out Bohm and be done with it — that is the ideal situation. I made it a little tougher on myself but made some pitches when I needed to and came through and that’s what it’s all about.”

The Mets finished with a split in the London Series in winning for the fourth time in five games.

This one included a three-run rally in the top of the ninth against Alvarado in which Mark Vientos’ infield single, Pete Alonso’s hit-by-pitch and a passed ball gave the Mets their runs.

Brandon Nimmo was asked if he thought this latest victory could serve as a spark for the team.

“We just swept the Nationals, too,” Nimmo said. “Have we been looking for a spark or looking to build on things? My opinion, personally, is we are looking to continue to build. We have been playing much better baseball for the last two weeks I think.”

Tyrone Taylor walked leading off the ninth against Alvarado to start the go-ahead rally.

Jeff McNeil, in his return to the lineup following a week on the bench, followed with his second single of the game before Vientos’ slow chopper to third allowed the tying run to score.

After Torrens walked to load the bases, Francisco Lindor struck out and Alonso got plunked to force in the go-ahead run. J.T. Realmuto’s ensuing passed ball gave the Mets a 6-4 lead.

“I was really proud of the team,” Nimmo said. “It took everybody contributing.”

David Dahl’s pinch-hit homer against Dedniel Nunez in the seventh gave the Phillies a 4-3 lead after the Mets had rallied to tie the game the previous inning.

But Jake Diekman and Garrett combined for the next two scoreless innings, allowing the opportunity for a rally in the ninth.

Jose Quintana continued his lackluster season with a blah performance that lasted only 3 ²/₃ innings. Over that stretch he allowed three earned runs on six hits and two walks with one strikeout.

The veteran left-hander saw his ERA rise from 5.17 to 5.29 — hardly inspiring for a team that has impressive rookie Christian Scott only a phone call away at Triple-A Syracuse.

Quintana nearly got stomped in the first inning, loading the bases on a single and two walks, but got Bohm to hit a double-play grounder, with the run scoring. Quintana kept the damage at 1-0 by next retiring Castellanos.

The Mets also turned a double play behind Quintana after he plunked Edmundo Sosa to begin the second. But Quintana’s luck expired in the fourth, when he surrendered two additional runs on four hits and was removed from the game.

Sosa smashed an RBI double following Castellanos’ single to give the Phillies a 2-0 lead. Whit Merrifield’s ensuing RBI single stretched the Mets’ deficit to three runs.

Danny Young replaced Quintana and walked Kyle Schwarber to load the bases before striking out Realmuto to escape.

The Mets awoke against starter Taijuan Walker and reliever Gregory Soto in the sixth.

After Torrens singled and Alonso drew a two-out walk, Nimmo sliced a double against Soto for the Mets’ first run. J.D. Martinez followed with a two-run single that tied it 3-3.

“I think the people in London got to see a really well-played and fun game and get that playoff-like baseball for a day,” Nimmo said. “Hopefully it leaves them wanting more.”