Offer Terms & Conditions. RHS Gardens [RHS Bridgewater, RHS Harlow Carr, RHS Hyde Hall, RHS Rosemoor, RHS Wisley] will be taking part in National Lottery Open Week with a special offer of £1 admission per person for up to 4 people on presentation of a valid National Lottery ticket, scratchcard or Instant Win Game. This offer will run from Saturday 7 - Saturday 14 March 2026. Tickets should be pre-booked via the link provided. One National Lottery ticket (physical or digital), scratchcard, or Instant Win Game will give access to up to 4 people. All National Lottery games, including National Lottery draw-based games, Instant Win Games, and National Lottery scratchcards, purchased in-store and online or via app, qualify to redeem this offer. Proof of purchase of a National Lottery game can be either a hard copy ticket or digital. The date of the draw or date of purchase is not relevant. All offers are subject to availability. RHS Gardens have the right to refuse entry in the event of the venue or offer reaching capacity, as well as unforeseen circumstances. In the event of queries on the day, the organisation's decision is final. This offer is not exchangeable.