Can private reg plates increase in value over time?

They can, but it depends on how in demand the number plate is. If you’re buying with future value in mind, look for plates with broad appeal (clean character sets, popular letters/numbers) rather than something very niche.

If you already have a personalised plate and want a quick sense-check on the value, the simplest starting point is a free, no-obligation online valuation, which gives you an instant estimate based on selling patterns.