Watford have decided to give the whole of the Vicarage Road end to West Ham United fans for the game in August due to advice from the police and a recent club review.

The club website read: “Following advice from police, along with wanting to ensure the maximum enjoyment and safety for all Watford FC fans, we have taken the decision for this game to allocate the entire Vicarage Road End to West Ham supporters.”

The decision was also influenced by what happened when Watford played Queens Park Rangers in April and the subsequent report, which can be read here. Season ticket holders in the Family Area of the Vicarage Road end have been asked to contact the ticket office before next Wednesday so they can be moved for the fixture.

Watford insists West Ham's allocation will be "significantly short" of the stand's 4,600 capacity.

The club say the available seats will be allocated on a first come first served basis but due to the relocation, it is not possible to buy extra tickets at present.

Fans who have a ticket purchasing history of three home league games or more since August 2009 will be able to buy two tickets from July 28.

Watford fans have been warned not to buy tickets for West Ham-supporting friends.

The website read: “Any Watford fans that are known to have purchased tickets for West Ham supporters in either the Rous or Rookery Stands (home supporters only), will have action taken against them which could include their season ticket being confiscated without a refund and/or a banning order.”

Season ticket holders and fans with the above purchase history will be able to buy two tickets up until 2pm on match day but will only be able to purchase one for the final hour before kick-off.

Ticket office number is 0844 856 1881.