Postpublished at 14:34 British Summer Time 23 May 2015
Andy Rowley
BBC London 94.9
"That was a really big hit from the Scot Duncan Taylor that led to Saracens winning that penalty. It earned him a big hug from defensive captain Brad Barritt."
Saracens face Bath in Premiership final on 30 May (14:30 BST)
FT: Bath 47-10 Leicester
Banahan hat-trick as Bath score seven tries
FT: Northampton 24-29 Saracens
Saracens reach fourth Premiership final in six years
Sarries tries from Strettle and George, Farrell kicks five penalties
Steve Marshall and Brendon Mitchell
Andy Rowley
BBC London 94.9
"That was a really big hit from the Scot Duncan Taylor that led to Saracens winning that penalty. It earned him a big hug from defensive captain Brad Barritt."
That's meat and drink to Owen Farrell, who slots the ball though the posts from around 30 metres out.
Saracens are back up to full strength as Mako Vunipola returns to the fray. The visitors will be happy to have only conceded one score in that 10 minutes. Not only that but they get the chance to retake the lead as England centre Brad Barritt turns the ball over midway inside the Saints half and is rewarded with a penalty.
Saracens' under-strength pack survive that scrum and can then breathe a little easier as Saints prop Salesi Ma'afu is penalised, allowing Owen Farrell to clear.
Saracens are really under the pump here as Lee Dickson and then Alex Corbisiero make half breaks. But after nine phases Sarries can take a breather as they are awarded the put-in at a scrum after Saints are pulled up for obstruction. This is breathless stuff.
That was an impressive response from Northampton after that early setback, and their forwards show signs of taking control as they drive the Saracens scrum backwards to be rewarded with another penalty which puts them deep in opposing territory once more.
Joe Townsend
BBC Radio Northampton
"Both sides started cagily, happy to either kick deep or test with high bombs. Nerves have been cast aside in the stands though, as the home crowd dragged Saints to parity inside an electric Franklin's Gardens. A crucial spell coming up with Saracens prop Mako Vunipola in the sin bin."
That Northampton pressure pays off as Owen Farrell is ruled to have stopped Saints' catch and drive illegally and referee Greg Garner goes under the posts to award a penalty try. Stephen Myler slots over the simplest of conversions and we are level.
Once again Saracens can only stop Northampton illegally and referee Greg Garner sends Sarries prop Mako Vunipola to the bin. The visitors are under all sorts of pressure.
Dylan Hartley's line-out is secured and Northampton rumble towards the line. They think they are over but the referee says no and instead gives Saints a penalty for Billy Vunipola going in at the side. Saints will try again.
Northampton go through the phases deep inside Saracens territory and are rewarded with a penalty. Stephen Myler goes for the corner.
Northampton can't make the most of that field position, but after Calum Clark then turns the ball over on halfway the boot of James Wilson pins Sarries inside their own 22.
That's a good crossfield kick by Northampton centre Luther Burrell, who saw David Strettle out of position and knocked it behind him. Alex Goode gathers but can only run it into touch for a Saints line-out midway inside the Sarries half.
That will also be the end of the game for Ahsee Tuala, who injured his shoulder at the bottom of a ruck. James Wilson replaces him at full-back.
Andy Rowley
BBC London 94.9
"What a start that is for Saracens. A brilliant kick from David Strettle that just held up, a fantastic chase down the line and they were over in the corner. Just how important was it that full-back Ahsee Tuala was out of position for Northampton?"
What a start for Saracens! With Ahsee Tuala down they take full advantage of their numerical advantage by spinning the ball wide. David Strettle boots it downfield from inside his own half and Duncan Taylor wins the foot race to give it back to his supporting wing, who dives over from a couple of metres out. Owen Farrell slots over the conversion from the touchline.
Saracens wing Chris Wyles shows no nerves as he takes a high bomb from Lee Dickson on his own 22. That was a positive first touch. Worryingly for Saints full-back Ahsee Tuala is having treatment on halfway.
Referee Greg Garner blows his whistle, Northampton fly-half Stephen Myler kicks high and long and we are off.
Both sides enter the arena to rapturous applause. There's a great noise in the stadium. Saracens supporters have travelled in good numbers, waving their flags, and both sets of fans are ready for this.
Flags are being flown on the pitch and the teams are making their final preparations in the dressing rooms. "When the Saints go marching in" rings around the Gardens. We're almost ready for action.