Inflata Nation Colindale (London)

Safety should be your top priority when hiring a bouncy castle in Wembley. Check that the company's inflatables have been tested to BS EN 14960 by a PIPA (Pertexa Inflatable Play Accreditation) or RPII (Register of Play Inspectors International) registered inspector. Ask to see the test certificate — it should be dated within the last 12 months. The company must also hold public liability insurance of at least £1 million, and ideally £5 million. Request a copy of their insurance certificate before booking.

Measure your setup area carefully before hiring. A standard children's bouncy castle needs a flat area of roughly 15ft x 15ft with at least 3ft clearance on all sides and 2ft above. Check for overhead obstructions like washing lines, tree branches and power cables. The company should stake the castle into soft ground or use sandbag anchors on hard surfaces — never hire from a company that does not properly anchor the unit. Ask about their weather policy: most companies will postpone or cancel in winds above 24mph, but refund and rebooking policies vary.

Compare at least three quotes and ask what is included. Good companies deliver, set up, safety-brief and collect the castle as part of the hire price. Ask whether an adult must supervise at all times (yes — this is a legal requirement) and whether they provide a safety mat for the entrance. Read Google reviews paying attention to comments about the cleanliness of the inflatables, punctuality of delivery and how well the company communicated about weather-related changes.