We spent money on fiscal stimulus in 2008, which got us out of the recession at the time (we cut taxes and brought forward various investments that were in the pipeline). After that, no, we never really had the option for further fiscal stimulus - the recession was over, so the right thing to do was to look at reducing the deficit. It was the pace and scale of the cuts that we had a choice over. We didn't have to cut as quickly as we did, and we're paying the price now in terms of lower GDP growth.
It's important to note that George Osborne took a genuine gamble. He reckoned that reducing the deficit faster would result in lower interest rates and higher business confidence, both of which resulting in more business investment. It seemed like a plausible argument at the time, but it was still a gamble; mainstream economic theory didn't really support this kind of "expansionary fiscal contraction". At the time I was fairly open-minded about it, tbh I really hope that it worked for the Lib Dem's sake. Turns out it didn't - we got the ultra-low interest rates, but we don't have the confidence to invest. Part of that is the Eurozone's fault, but I can't help thinking that if we had the kind of dysfunctional government that the US has (i.e. one that didn't have the power to cut spending, raise taxes, or do anything much at all), we wouldn't be bouncing along the bottom right now.