The contest, which started on the first day of the school break, focuses on the theme of superheroes in an effort to spark kids' imaginations, and all of Northern Rock's 74 branches are taking part.
For a chance at winning £100 in High Street vouchers, children have the option to draw their own superhero, colour in a template design supplied by Northern Rock, or dress up as a superhero and send a photograph of themselves in costume to their local branch.
The competition is split into three age categories - up to four years, five to nine years and ten to 16 years of age. An independent representative at each branch will choose a winner from each age group, each of whom will win a High Street voucher worth £25. All branch winners will then progress to the national judging and their chance to win a High Street voucher worth £100.
To enter, interested parties can visit any of Northern Rock's branches and pick up an entry form, which can either be completed in branch or taken away and returned no later than 3rd September 2011. All winners will be notified by 24 October 2011. Full terms and conditions are available in branches.
Launched in April last year, the Little Rock's top-paying access account at 3.00% gross pa/AER, is available through Northern Rock's branch network, and by post, to customers aged under 16. It must be opened with an appropriate adult named on the account as a trustee.
Little Rock can be opened by cash, cheque or by transfer from an existing Northern Rock account. There is a maximum balance limit of £10,000, and all trustees are required to sign for any withdrawals. All withdrawals are notice free.