I've not been keen on Maplins for a few years...
First, their marketing and store-layout strategy seems to focus on overpriced gadgets and tat: the actual useful and interesting stuff is shoved to the back of the store where it languishes under dust and cobwebs.
Then, even their bread-and-butter stuff generally has a heavy markup.
And finally, their staff training manual looks to have been derived from the old Window Salesman manual. If I've gone into the store, then it's because I'm either mooching while bored, looking to see if there's anything interesting or buying something specific. It's therefore counter-productive to have some sales-minion (who generally doesn't appear to have any domain knowledge) jump on me as soon as I walk in the door - it actively deters me from even contemplating a visit!