Buckingham Palace opens its State Rooms to the public only in summer — roughly July through October — and the payoff is big: rooms dripping with gilding, art from the Royal Collection and a slice of the gardens. The catch is that getting in means passing through an airport-style security checkpoint with a long list of prohibited items. Some are just checked and returned at the exit. Others, thanks to UK law, can end up gone for good.
Start with the everyday stuff. Any bag bigger than about 45 x 30 x 20 cm won't make it past the gate, and since the tour is one-way you can't duck back to drop it off. The practical fix: leave luggage at your hotel, or use the storage facilities near Victoria Station, half a mile away, from around £3.99 a day. Long umbrellas — think golf and bubble styles — are another one to check at the gate. London gets drizzle on roughly 156 days a year, so bring something compact that folds into a purse instead.
Blades are where the rules split in two. Non-locking pocketknives under three inches, plus scissors of any size (yes, even the tiny pair in your sewing kit or manicure set), will be held by security and handed back when you leave. But locking knives, flick and butterfly knives, or any blade over three inches must be permanently surrendered — and locking knives are illegal for civilians to carry in the UK anyway. One traveller on the Rick Steves forums reported losing a one-inch locking pocketknife for good.
Pepper spray is the biggest trap for American visitors. Carrying it is common back home — one survey found about 20% of women carry it regularly — but in the UK it's classed as a Section 5 firearm, the same legal category as grenades, with prison sentences possible. Palace rules also ban CS and OC spray. Legal alternatives include portable panic alarms. Rounding out the list: sealed alcohol (checked, retrievable on exit, so time your whisky souvenir shopping carefully) and paints and aerosol products.
If you're touring the palace this summer, the two-minute version is: travel light, pack a folding umbrella, rummage through every zip pocket for scissors or multitools before you arrive, and leave anything self-defence related at home entirely. Checking items adds time to entry, and you won't pass back through the gate on the way out — so build a buffer into your timed slot.
