UK growth stocks are on fire in 2026, with companies such as Raspberry Pi (LSE:RPI) surging close to 240% since January alone!
But the question now is, which stocks will be the next top performers? Here are two picks from institutional analysts for June.
Raspberry Pi: is there still more to go?
Even after more than tripling, it seems analysts are still bullish about what’s on the horizon. As a quick crash course, Raspberry Pi makes low-cost, high-performance computing platforms used across industrial automation, education, and edge-AI applications.
The most recent trading update upgraded full-year EBITDA guidance to “significantly ahead” of the current market consensus of $42m, and EBITDA across the first half of its 2026 fiscal year is already expected to come in at no less than $38m.
That’s a pretty extraordinary number for a business of this size. And the team of analysts at Jefferies responded by raising its revenue forecast by 42% to $511m, underpinned by accelerating demand from AI and industrial customers.
Peel Hunt also raised its 2026 revenue forecast, though it trimmed its gross margin expectations to reflect the ongoing cost pressures from rising memory prices. And that’s precisely the bear case.
Raspberry Pi’s single-board computers rely heavily on LPDDR4 DRAM, the price of which has risen sharply as memory manufacturers divert capacity to serve AI data centres. As such, the risk of margin compression is significant, especially once the group’s used up its inventory buffers.
Nevertheless, even with this incoming headwind, it’s hard not to be impressed with Raspberry Pi’s fundamentals.
Gamma Communications: the unloved compounder
Another growth stock getting attention from experts is Gamma Communications (LSE:GAMA) – a cloud-based business communications provider serving businesses across the UK and Western Europe.
Unlike Raspberry Pi, Gamma’s share price hasn’t been on a rampage in recent months or even in recent years. But the share price tells a misleading story.
Despite reporting 2025 revenue up 11% to £645.8m and gross margins expanding to 54%, the stock has more than halved from its 52-week high. Why? The market took fright at falling earnings driven by acquisition-related costs from its German expansion.
While these expenses are real, acquisitions are ultimately a short-term distortion rather than a permanent drop in profitability. And its why institutional analysts are starting to think the recent pessimism could be a buying opportunity.
The median 12-month price target from six analysts currently covering the stock sits at 1,427p. That’s roughly 51% higher than where the shares are trading today. And its party why several institutional analysts have reiterated their Buy recommendations in recent months.
To be fair, there are some real risks. The debt-to-equity ratio has risen following the German acquisitions, and any slowdown in the European communications market could pressure near-term earnings even further.
It’s a valid concern. But the consensus is it may currently be too excessive.
The bottom line
Both Raspberry Pi and Gamma represent genuinely different flavours of growth. One is a momentum story with extraordinary near-term numbers but real margin uncertainty ahead. The other is a contrarian recovery play that analysts believe the market’s significantly mispricing.
For investors hunting for British growth stocks in June, both are worth a deeper dive.
Should you invest £5,000 in Gamma Communications Plc right now?
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Zaven Boyrazian does not hold any positions in the companies mentioned.
