Tomorrow's game is the first time that the Saints and Welsh have met in the top flight, although the two did cross paths during the Saints' Championship season of 2007/08.
London Welsh have been one of Aviva Premiership Rugby's most competitive newcomers, winning nearly half their matches, and Mallinder said that the Saints needed to treat them with plenty of respect.
"London Welsh have been very competitive this season and we will not be taking them lightly," he commented. "They have players with the experience and ability to take advantage if we make a mistake, and with Lyn Jones they have a coach who has been around the game for a long time.
"However we are in good spirits coming into tomorrow's game and training has been positive this week. Of course things have been somewhat different with the changes in the coaching staff, but the players have responded well and are fully focused on the job in hand, which is all about beating London Welsh."
Tickets remain available for tomorrow's game, with prices starting from just £18 for juniors and concessions, and £28 for adults. The game is not being covered live on any of Premiership Rugby's broadcast partners, so the only way to watch the action as it happens is in the flesh at Franklin's Gardens!
To book just CLICK HERE and follow the straightforward instructions!
NORTHAMPTON SAINTS TEAM TO PLAY LONDON WELSH
Aviva Premiership Rugby Round 9
Franklin's Gardens
Saturday, November 24th, 2012
Kick off 1:00pm
15 Tom MAY
14 Ken PISI
13 Dom WALDOUCK
12 Luther BURRELL
11 Jamie ELLIOTT
10 Ryan LAMB
9 Martin ROBERTS
1 Soane TONGA'UIHA
3 Brian MUJATI
4 Samu MANOA
6 Calum CLARK (capt)
8 GJ VAN VELZE
Replacements
16 Ross MCMILLAN
17 Alex WALLER
18 Paul DORAN JONES
19 Mark SORENSON
20 Rhys OAKLEY
21 Alex DAY
