The stand-up won huge critical acclaim for the comedy, which was set in the concrete jungle of a South East London tower block.
He starred as the grumpy Vince, and co-write it with Mark Lamarr and Martin Trenaman.
Both series have just been released available on one £24.99 set, including commentaries by the writers and directors, and an interview with Lock and Lamarr.
But Lock is also offering to answer any questions from Chortle readers about comedy or his career – and those who put the best five questions will receive a copy of the new box set.
Submit your questions using the form below by Thursday, please…
Live comedy picks
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Student Comedy Award semi-final
Bloomsbury Theatre
Wednesday 15 May from 20:30Book now
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Troy Club Comedy
Black Heart Pub
Friday 3 May from 19:30 - 22:30Book now
Gig of the day
Clint Edwards
Cardiff Chapter Arts Centre
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Chris McCausland: Yonks!
Lincoln New Theatre Royal
Saturday 4th May from 20:00Book now
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Daniel Kitson: Collaborator
Belfast Black Box
Sunday 5th May from 14:00
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Sarah Millican: Late Bloomer
High Wycombe Swan
Thursday 16th May from 20:00Book now