Image source: Getty Images. Christopher Ruane | Friday, 26th February, 2021 | More on: GOG SFOR Get the full details on this £5 stock now – while your report is free. Are you on the lookout for UK growth stocks?If so, get this FREE no-strings report now.While it’s available: you’ll discover what we think is a top growth stock for the decade ahead.And the performance of this company really is stunning.In 2019, it returned £150million to shareholders through buybacks and dividends.We believe its financial position is about as solid as anything we’ve seen.Since 2016, annual revenues increased 31%In March 2020, one of its senior directors LOADED UP on 25,000 shares – a position worth £90,259Operating cash flow is up 47%. (Even its operating margins are rising every year!)Quite simply, we believe it’s a fantastic Foolish growth pick.What’s more, it deserves your attention today.So please don’t wait another moment. Enter Your Email Address 2 UK shares I’d buy now to double my money See all posts by Christopher Ruane FREE REPORT: Why this £5 stock could be set to surge Our 6 ‘Best Buys Now’ Shares Simply click below to discover how you can take advantage of this. christopherruane owns shares of S4 Capital plc. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Share price growth is what a lot of investors seek. I like income and share price growth, but either is welcome! I have been scanning the stock market for UK shares I think could see price growth over the next several years. Here are a couple I think could double my money.A rising digital advertising powerhouseAfter Sir Martin Sorrell left WPP, which he had grown from a shell company to an advertising giant, he set out to do the same thing again.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…But, as he had already seen at WPP, the world was changing. Clients wanted digital first strategies and data was becoming increasingly valuable. Freed from his legacy operation, Sir Martin was able to put this into practice by building an entirely new type of digital media agency embedding those principles. His growth strategy of acquisitions had worked at WPP and he kept that while jettisoning old practices which had outlived their utility.The result is S4 Capital. It’s no secret that I think this holding has growth potential – in fact I picked it as my top British share for 2021. But it’s had a rough few weeks. It’s down almost 15% since the start of the year, albeit that still puts it at a price more than double where it sat a year ago.I’m unclear why the price of these UK shares has fallen. It could be as part of the wider tech pullback, or because no new acquisition has been announced for a few weeks and the market expects a constant deal stream. It could also be that other investors, like me, were unsettled to see the first share sales by directors last month.Whatever the reason, I retain confidence in the story. S4 is the only listed company I know whose public three-year vision is to double revenues and profits organically. Digital advertising is a fast growing space and Sir Martin’s hand on the tiller inspires my confidence. From its lower price, I think it could double in coming years.These UK sharesShares in transport operator Go-Ahead have doubled since October. Could they do it again in the next several years?The return of train and bus passengers as lockdowns lift should help revenue somewhat, although the recent price increase suggests that some of that is already in the share price. But Go-Ahead is in the fortunate position that most of its revenue is guaranteed, even if passenger numbers are low. In fact, 90% of Go-Ahead revenues come from contracts with no revenue risk from shifts in passenger demand.Until the pandemic struck, the company’s dividend was just over a pound a year. At the current share price, that would suggest a yield of 8.5% if dividends resume at the same level. Dividends have not restarted yet and when they do, reduced passenger demand could lead the company to adopt a cautious level and pay out less than before.But if dividends do come back at the same level, the high yield looks very tasty. I would expect it to bring in more investors, which with higher passenger demand could push these UK shares up to where they sat before the pandemic, almost double where they are now. From there, it’s a short step to doubling from today’s price.